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Finding the Fourth Proportional to 40,696,657.60, 61,044,986.40 and 15,132,377.20

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Solution

The fourth proportional to 40,696,657.60, 61,044,986.40 and 15,132,377.20 is: 22,698,565.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,696,657.60 : 61,044,986.40 = 15,132,377.20 : x
  2. Step 2: Convert to fraction form
    40,696,657.60/61,044,986.40 = 15,132,377.20/x
  3. Step 3: Cross multiply
    40,696,657.60x = 61,044,986.40 × 15,132,377.20
  4. Step 4: Simplify right side
    40,696,657.60x = 923,755,760,373,670
  5. Step 5: Solve for x
    x = 923,755,760,373,670/40,696,657.60
  6. Step 6: Final answer
    x = 22,698,565.80

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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.