Home / 81,648,010.20-122,472,015.30-45,741,552.60

Finding the Fourth Proportional to 81,648,010.20, 122,472,015.30 and 45,741,552.60

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Solution

The fourth proportional to 81,648,010.20, 122,472,015.30 and 45,741,552.60 is: 68,612,328.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,648,010.20 : 122,472,015.30 = 45,741,552.60 : x
  2. Step 2: Convert to fraction form
    81,648,010.20/122,472,015.30 = 45,741,552.60/x
  3. Step 3: Cross multiply
    81,648,010.20x = 122,472,015.30 × 45,741,552.60
  4. Step 4: Simplify right side
    81,648,010.20x = 5,602,060,129,872,955
  5. Step 5: Solve for x
    x = 5,602,060,129,872,955/81,648,010.20
  6. Step 6: Final answer
    x = 68,612,328.90

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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.