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Finding the Fourth Proportional to 79,910.59, 119,734.17 and 71,670.39

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Solution

The fourth proportional to 79,910.59, 119,734.17 and 71,670.39 is: 107,387.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,910.59 : 119,734.17 = 71,670.39 : x
  2. Step 2: Convert to fraction form
    79,910.59/119,734.17 = 71,670.39/x
  3. Step 3: Cross multiply
    79,910.59x = 119,734.17 × 71,670.39
  4. Step 4: Simplify right side
    79,910.59x = 8,581,393,882.38
  5. Step 5: Solve for x
    x = 8,581,393,882.38/79,910.59
  6. Step 6: Final answer
    x = 107,387.44

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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.