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Finding the Third Proportional to 54,432 and 81,612

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Solution

The third proportional to 54,432 and 81,612 is: 122,364.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,432 : 81,612 = 81,612 : x
  2. Step 2: Convert to fraction form
    54,432/81,612 = 81,612/x
  3. Step 3: Cross multiply
    54,432x = 81,612 × 81,612
  4. Step 4: Simplify right side
    54,432x = 6,660,518,544
  5. Step 5: Solve for x
    x = 6,660,518,544/54,432
  6. Step 6: Final answer
    x = 122,364.02

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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.