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Finding the Third Proportional to 54,975 and 82,137

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Solution

The third proportional to 54,975 and 82,137 is: 122,719.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,975 : 82,137 = 82,137 : x
  2. Step 2: Convert to fraction form
    54,975/82,137 = 82,137/x
  3. Step 3: Cross multiply
    54,975x = 82,137 × 82,137
  4. Step 4: Simplify right side
    54,975x = 6,746,486,769
  5. Step 5: Solve for x
    x = 6,746,486,769/54,975
  6. Step 6: Final answer
    x = 122,719.18

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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.