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Finding the Third Proportional to 61,681 and 132,716

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Solution

The third proportional to 61,681 and 132,716 is: 285,558.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,681 : 132,716 = 132,716 : x
  2. Step 2: Convert to fraction form
    61,681/132,716 = 132,716/x
  3. Step 3: Cross multiply
    61,681x = 132,716 × 132,716
  4. Step 4: Simplify right side
    61,681x = 17,613,536,656
  5. Step 5: Solve for x
    x = 17,613,536,656/61,681
  6. Step 6: Final answer
    x = 285,558.55

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.