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Finding the Third Proportional to 20,942 and 36,930

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Solution

The third proportional to 20,942 and 36,930 is: 65,123.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,942 : 36,930 = 36,930 : x
  2. Step 2: Convert to fraction form
    20,942/36,930 = 36,930/x
  3. Step 3: Cross multiply
    20,942x = 36,930 × 36,930
  4. Step 4: Simplify right side
    20,942x = 1,363,824,900
  5. Step 5: Solve for x
    x = 1,363,824,900/20,942
  6. Step 6: Final answer
    x = 65,123.91

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Why These Related Problems?

These problems maintain the same ratio (1.76) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.