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Finding the Third Proportional to 18,132.50 and 38,442

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Solution

The third proportional to 18,132.50 and 38,442 is: 81,499.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,132.50 : 38,442 = 38,442 : x
  2. Step 2: Convert to fraction form
    18,132.50/38,442 = 38,442/x
  3. Step 3: Cross multiply
    18,132.50x = 38,442 × 38,442
  4. Step 4: Simplify right side
    18,132.50x = 1,477,787,364
  5. Step 5: Solve for x
    x = 1,477,787,364/18,132.50
  6. Step 6: Final answer
    x = 81,499.37

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.