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Finding the Third Proportional to 63,608 and 87,636

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Solution

The third proportional to 63,608 and 87,636 is: 120,740.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,608 : 87,636 = 87,636 : x
  2. Step 2: Convert to fraction form
    63,608/87,636 = 87,636/x
  3. Step 3: Cross multiply
    63,608x = 87,636 × 87,636
  4. Step 4: Simplify right side
    63,608x = 7,680,068,496
  5. Step 5: Solve for x
    x = 7,680,068,496/63,608
  6. Step 6: Final answer
    x = 120,740.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.