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Finding the Third Proportional to 38,890 and 80,372

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Solution

The third proportional to 38,890 and 80,372 is: 166,100.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,890 : 80,372 = 80,372 : x
  2. Step 2: Convert to fraction form
    38,890/80,372 = 80,372/x
  3. Step 3: Cross multiply
    38,890x = 80,372 × 80,372
  4. Step 4: Simplify right side
    38,890x = 6,459,658,384
  5. Step 5: Solve for x
    x = 6,459,658,384/38,890
  6. Step 6: Final answer
    x = 166,100.76

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.