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Finding the Third Proportional to 54,856 and 81,924

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Solution

The third proportional to 54,856 and 81,924 is: 122,348.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,856 : 81,924 = 81,924 : x
  2. Step 2: Convert to fraction form
    54,856/81,924 = 81,924/x
  3. Step 3: Cross multiply
    54,856x = 81,924 × 81,924
  4. Step 4: Simplify right side
    54,856x = 6,711,541,776
  5. Step 5: Solve for x
    x = 6,711,541,776/54,856
  6. Step 6: Final answer
    x = 122,348.36

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.