Home / 85,752,085.20-128,628,127.80-49,472,379.60

Finding the Fourth Proportional to 85,752,085.20, 128,628,127.80 and 49,472,379.60

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Solution

The fourth proportional to 85,752,085.20, 128,628,127.80 and 49,472,379.60 is: 74,208,569.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,752,085.20 : 128,628,127.80 = 49,472,379.60 : x
  2. Step 2: Convert to fraction form
    85,752,085.20/128,628,127.80 = 49,472,379.60/x
  3. Step 3: Cross multiply
    85,752,085.20x = 128,628,127.80 × 49,472,379.60
  4. Step 4: Simplify right side
    85,752,085.20x = 6,363,539,565,758,913
  5. Step 5: Solve for x
    x = 6,363,539,565,758,913/85,752,085.20
  6. Step 6: Final answer
    x = 74,208,569.40

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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.