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Finding the Fourth Proportional to 71,279.81, 98,356.39 and 42,593.43

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Solution

The fourth proportional to 71,279.81, 98,356.39 and 42,593.43 is: 58,773.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,279.81 : 98,356.39 = 42,593.43 : x
  2. Step 2: Convert to fraction form
    71,279.81/98,356.39 = 42,593.43/x
  3. Step 3: Cross multiply
    71,279.81x = 98,356.39 × 42,593.43
  4. Step 4: Simplify right side
    71,279.81x = 4,189,335,961.20
  5. Step 5: Solve for x
    x = 4,189,335,961.20/71,279.81
  6. Step 6: Final answer
    x = 58,773.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.