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Finding the Third Proportional to 71,331.75 and 168,691.50

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Solution

The third proportional to 71,331.75 and 168,691.50 is: 398,936.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,331.75 : 168,691.50 = 168,691.50 : x
  2. Step 2: Convert to fraction form
    71,331.75/168,691.50 = 168,691.50/x
  3. Step 3: Cross multiply
    71,331.75x = 168,691.50 × 168,691.50
  4. Step 4: Simplify right side
    71,331.75x = 28,456,822,172.25
  5. Step 5: Solve for x
    x = 28,456,822,172.25/71,331.75
  6. Step 6: Final answer
    x = 398,936.27

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.