Home / 81,844,010,010.90-122,766,015,016.35-39,947,752,487.70

Finding the Fourth Proportional to 81,844,010,010.90, 122,766,015,016.35 and 39,947,752,487.70

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Solution

The fourth proportional to 81,844,010,010.90, 122,766,015,016.35 and 39,947,752,487.70 is: 59,921,628,731.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,844,010,010.90 : 122,766,015,016.35 = 39,947,752,487.70 : x
  2. Step 2: Convert to fraction form
    81,844,010,010.90/122,766,015,016.35 = 39,947,752,487.70/x
  3. Step 3: Cross multiply
    81,844,010,010.90x = 122,766,015,016.35 × 39,947,752,487.70
  4. Step 4: Simplify right side
    81,844,010,010.90x = 4,904,226,381,774,410,743,808
  5. Step 5: Solve for x
    x = 4,904,226,381,774,410,743,808/81,844,010,010.90
  6. Step 6: Final answer
    x = 59,921,628,731.55

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Double scale
Find fourth proportional to 81,844,010,011.90, 122,766,015,017.85 and 39,947,752,488.70
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.