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Finding the Third Proportional to 54,265 and 81,340

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Solution

The third proportional to 54,265 and 81,340 is: 121,923.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,265 : 81,340 = 81,340 : x
  2. Step 2: Convert to fraction form
    54,265/81,340 = 81,340/x
  3. Step 3: Cross multiply
    54,265x = 81,340 × 81,340
  4. Step 4: Simplify right side
    54,265x = 6,616,195,600
  5. Step 5: Solve for x
    x = 6,616,195,600/54,265
  6. Step 6: Final answer
    x = 121,923.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.