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Finding the Third Proportional to 38,639 and 82,382

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Solution

The third proportional to 38,639 and 82,382 is: 175,646.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,639 : 82,382 = 82,382 : x
  2. Step 2: Convert to fraction form
    38,639/82,382 = 82,382/x
  3. Step 3: Cross multiply
    38,639x = 82,382 × 82,382
  4. Step 4: Simplify right side
    38,639x = 6,786,793,924
  5. Step 5: Solve for x
    x = 6,786,793,924/38,639
  6. Step 6: Final answer
    x = 175,646.21

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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.