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Finding the Third Proportional to 33,687 and 51,561

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Solution

The third proportional to 33,687 and 51,561 is: 78,918.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,687 : 51,561 = 51,561 : x
  2. Step 2: Convert to fraction form
    33,687/51,561 = 51,561/x
  3. Step 3: Cross multiply
    33,687x = 51,561 × 51,561
  4. Step 4: Simplify right side
    33,687x = 2,658,536,721
  5. Step 5: Solve for x
    x = 2,658,536,721/33,687
  6. Step 6: Final answer
    x = 78,918.77

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.