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Finding the Third Proportional to 18,909 and 41,571

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Solution

The third proportional to 18,909 and 41,571 is: 91,392.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,909 : 41,571 = 41,571 : x
  2. Step 2: Convert to fraction form
    18,909/41,571 = 41,571/x
  3. Step 3: Cross multiply
    18,909x = 41,571 × 41,571
  4. Step 4: Simplify right side
    18,909x = 1,728,148,041
  5. Step 5: Solve for x
    x = 1,728,148,041/18,909
  6. Step 6: Final answer
    x = 91,392.88

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.