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Finding the Third Proportional to 71,325 and 99,708

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Solution

The third proportional to 71,325 and 99,708 is: 139,385.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,325 : 99,708 = 99,708 : x
  2. Step 2: Convert to fraction form
    71,325/99,708 = 99,708/x
  3. Step 3: Cross multiply
    71,325x = 99,708 × 99,708
  4. Step 4: Simplify right side
    71,325x = 9,941,685,264
  5. Step 5: Solve for x
    x = 9,941,685,264/71,325
  6. Step 6: Final answer
    x = 139,385.70

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.