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Finding the Fourth Proportional to 40,691, 61,036.88 and 14,400.20

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Solution

The fourth proportional to 40,691, 61,036.88 and 14,400.20 is: 21,600.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,691 : 61,036.88 = 14,400.20 : x
  2. Step 2: Convert to fraction form
    40,691/61,036.88 = 14,400.20/x
  3. Step 3: Cross multiply
    40,691x = 61,036.88 × 14,400.20
  4. Step 4: Simplify right side
    40,691x = 878,943,279.38
  5. Step 5: Solve for x
    x = 878,943,279.38/40,691
  6. Step 6: Final answer
    x = 21,600.43

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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.