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Finding the Third Proportional to 40,272 and 87,465

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Solution

The third proportional to 40,272 and 87,465 is: 189,961.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,272 : 87,465 = 87,465 : x
  2. Step 2: Convert to fraction form
    40,272/87,465 = 87,465/x
  3. Step 3: Cross multiply
    40,272x = 87,465 × 87,465
  4. Step 4: Simplify right side
    40,272x = 7,650,126,225
  5. Step 5: Solve for x
    x = 7,650,126,225/40,272
  6. Step 6: Final answer
    x = 189,961.42

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.