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Finding the Third Proportional to 21,778 and 47,244

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Solution

The third proportional to 21,778 and 47,244 is: 102,488.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,778 : 47,244 = 47,244 : x
  2. Step 2: Convert to fraction form
    21,778/47,244 = 47,244/x
  3. Step 3: Cross multiply
    21,778x = 47,244 × 47,244
  4. Step 4: Simplify right side
    21,778x = 2,231,995,536
  5. Step 5: Solve for x
    x = 2,231,995,536/21,778
  6. Step 6: Final answer
    x = 102,488.55

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.