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Finding the Third Proportional to 38,625 and 81,402

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Solution

The third proportional to 38,625 and 81,402 is: 171,554.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,625 : 81,402 = 81,402 : x
  2. Step 2: Convert to fraction form
    38,625/81,402 = 81,402/x
  3. Step 3: Cross multiply
    38,625x = 81,402 × 81,402
  4. Step 4: Simplify right side
    38,625x = 6,626,285,604
  5. Step 5: Solve for x
    x = 6,626,285,604/38,625
  6. Step 6: Final answer
    x = 171,554.32

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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.