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Finding the Third Proportional to 38,654 and 81,460

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Solution

The third proportional to 38,654 and 81,460 is: 171,669.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,654 : 81,460 = 81,460 : x
  2. Step 2: Convert to fraction form
    38,654/81,460 = 81,460/x
  3. Step 3: Cross multiply
    38,654x = 81,460 × 81,460
  4. Step 4: Simplify right side
    38,654x = 6,635,731,600
  5. Step 5: Solve for x
    x = 6,635,731,600/38,654
  6. Step 6: Final answer
    x = 171,669.98

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.