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Finding the Third Proportional to 40,512 and 82,680

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Solution

The third proportional to 40,512 and 82,680 is: 168,739.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,512 : 82,680 = 82,680 : x
  2. Step 2: Convert to fraction form
    40,512/82,680 = 82,680/x
  3. Step 3: Cross multiply
    40,512x = 82,680 × 82,680
  4. Step 4: Simplify right side
    40,512x = 6,835,982,400
  5. Step 5: Solve for x
    x = 6,835,982,400/40,512
  6. Step 6: Final answer
    x = 168,739.69

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Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.