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Finding the Fourth Proportional to 72,584,493.60, 108,876,740.40 and 65,866,029.60

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Solution

The fourth proportional to 72,584,493.60, 108,876,740.40 and 65,866,029.60 is: 98,799,044.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,584,493.60 : 108,876,740.40 = 65,866,029.60 : x
  2. Step 2: Convert to fraction form
    72,584,493.60/108,876,740.40 = 65,866,029.60/x
  3. Step 3: Cross multiply
    72,584,493.60x = 108,876,740.40 × 65,866,029.60
  4. Step 4: Simplify right side
    72,584,493.60x = 7,171,278,605,937,916
  5. Step 5: Solve for x
    x = 7,171,278,605,937,916/72,584,493.60
  6. Step 6: Final answer
    x = 98,799,044.40

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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.