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Finding the Third Proportional to 38,832 and 81,360

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Solution

The third proportional to 38,832 and 81,360 is: 170,463.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,832 : 81,360 = 81,360 : x
  2. Step 2: Convert to fraction form
    38,832/81,360 = 81,360/x
  3. Step 3: Cross multiply
    38,832x = 81,360 × 81,360
  4. Step 4: Simplify right side
    38,832x = 6,619,449,600
  5. Step 5: Solve for x
    x = 6,619,449,600/38,832
  6. Step 6: Final answer
    x = 170,463.78

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.