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Finding the Third Proportional to 38,934 and 81,756

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Solution

The third proportional to 38,934 and 81,756 is: 171,676.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,934 : 81,756 = 81,756 : x
  2. Step 2: Convert to fraction form
    38,934/81,756 = 81,756/x
  3. Step 3: Cross multiply
    38,934x = 81,756 × 81,756
  4. Step 4: Simplify right side
    38,934x = 6,684,043,536
  5. Step 5: Solve for x
    x = 6,684,043,536/38,934
  6. Step 6: Final answer
    x = 171,676.26

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.