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Finding the Third Proportional to 38,939 and 82,738

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Solution

The third proportional to 38,939 and 82,738 is: 175,802.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,939 : 82,738 = 82,738 : x
  2. Step 2: Convert to fraction form
    38,939/82,738 = 82,738/x
  3. Step 3: Cross multiply
    38,939x = 82,738 × 82,738
  4. Step 4: Simplify right side
    38,939x = 6,845,576,644
  5. Step 5: Solve for x
    x = 6,845,576,644/38,939
  6. Step 6: Final answer
    x = 175,802.58

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.