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Finding the Third Proportional to 21,771 and 44,145

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Solution

The third proportional to 21,771 and 44,145 is: 89,512.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,771 : 44,145 = 44,145 : x
  2. Step 2: Convert to fraction form
    21,771/44,145 = 44,145/x
  3. Step 3: Cross multiply
    21,771x = 44,145 × 44,145
  4. Step 4: Simplify right side
    21,771x = 1,948,781,025
  5. Step 5: Solve for x
    x = 1,948,781,025/21,771
  6. Step 6: Final answer
    x = 89,512.70

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Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.