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Finding the Third Proportional to 38,366 and 81,700

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Solution

The third proportional to 38,366 and 81,700 is: 173,979.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,366 : 81,700 = 81,700 : x
  2. Step 2: Convert to fraction form
    38,366/81,700 = 81,700/x
  3. Step 3: Cross multiply
    38,366x = 81,700 × 81,700
  4. Step 4: Simplify right side
    38,366x = 6,674,890,000
  5. Step 5: Solve for x
    x = 6,674,890,000/38,366
  6. Step 6: Final answer
    x = 173,979.30

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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.