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Finding the Fourth Proportional to 37,782,892.80, 56,737,324.80 and 20,755,785.60

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Solution

The fourth proportional to 37,782,892.80, 56,737,324.80 and 20,755,785.60 is: 31,168,279.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,782,892.80 : 56,737,324.80 = 20,755,785.60 : x
  2. Step 2: Convert to fraction form
    37,782,892.80/56,737,324.80 = 20,755,785.60/x
  3. Step 3: Cross multiply
    37,782,892.80x = 56,737,324.80 × 20,755,785.60
  4. Step 4: Simplify right side
    37,782,892.80x = 1,177,627,749,066,363
  5. Step 5: Solve for x
    x = 1,177,627,749,066,363/37,782,892.80
  6. Step 6: Final answer
    x = 31,168,279.13

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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.