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Finding the Fourth Proportional to 71,394, 98,387.88 and 52,279.62

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Solution

The fourth proportional to 71,394, 98,387.88 and 52,279.62 is: 72,046.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,394 : 98,387.88 = 52,279.62 : x
  2. Step 2: Convert to fraction form
    71,394/98,387.88 = 52,279.62/x
  3. Step 3: Cross multiply
    71,394x = 98,387.88 × 52,279.62
  4. Step 4: Simplify right side
    71,394x = 5,143,680,979.01
  5. Step 5: Solve for x
    x = 5,143,680,979.01/71,394
  6. Step 6: Final answer
    x = 72,046.40

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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.