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Finding the Fourth Proportional to 71,727, 107,607.78 and 22,479

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Solution

The fourth proportional to 71,727, 107,607.78 and 22,479 is: 33,723.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,727 : 107,607.78 = 22,479 : x
  2. Step 2: Convert to fraction form
    71,727/107,607.78 = 22,479/x
  3. Step 3: Cross multiply
    71,727x = 107,607.78 × 22,479
  4. Step 4: Simplify right side
    71,727x = 2,418,915,286.62
  5. Step 5: Solve for x
    x = 2,418,915,286.62/71,727
  6. Step 6: Final answer
    x = 33,723.92

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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.