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Finding the Third Proportional to 37,638 and 81,215

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Solution

The third proportional to 37,638 and 81,215 is: 175,245.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,638 : 81,215 = 81,215 : x
  2. Step 2: Convert to fraction form
    37,638/81,215 = 81,215/x
  3. Step 3: Cross multiply
    37,638x = 81,215 × 81,215
  4. Step 4: Simplify right side
    37,638x = 6,595,876,225
  5. Step 5: Solve for x
    x = 6,595,876,225/37,638
  6. Step 6: Final answer
    x = 175,245.13

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.