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Finding the Third Proportional to 34,721 and 81,908

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Solution

The third proportional to 34,721 and 81,908 is: 193,223.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,721 : 81,908 = 81,908 : x
  2. Step 2: Convert to fraction form
    34,721/81,908 = 81,908/x
  3. Step 3: Cross multiply
    34,721x = 81,908 × 81,908
  4. Step 4: Simplify right side
    34,721x = 6,708,920,464
  5. Step 5: Solve for x
    x = 6,708,920,464/34,721
  6. Step 6: Final answer
    x = 193,223.71

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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.