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Finding the Third Proportional to 38,665 and 82,391

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Solution

The third proportional to 38,665 and 82,391 is: 175,566.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,665 : 82,391 = 82,391 : x
  2. Step 2: Convert to fraction form
    38,665/82,391 = 82,391/x
  3. Step 3: Cross multiply
    38,665x = 82,391 × 82,391
  4. Step 4: Simplify right side
    38,665x = 6,788,276,881
  5. Step 5: Solve for x
    x = 6,788,276,881/38,665
  6. Step 6: Final answer
    x = 175,566.45

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.