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Finding the Third Proportional to 40,272 and 81,624

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Solution

The third proportional to 40,272 and 81,624 is: 165,436.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,272 : 81,624 = 81,624 : x
  2. Step 2: Convert to fraction form
    40,272/81,624 = 81,624/x
  3. Step 3: Cross multiply
    40,272x = 81,624 × 81,624
  4. Step 4: Simplify right side
    40,272x = 6,662,477,376
  5. Step 5: Solve for x
    x = 6,662,477,376/40,272
  6. Step 6: Final answer
    x = 165,436.96

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Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.