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Finding the Third Proportional to 66,474 and 89,550

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Solution

The third proportional to 66,474 and 89,550 is: 120,636.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,474 : 89,550 = 89,550 : x
  2. Step 2: Convert to fraction form
    66,474/89,550 = 89,550/x
  3. Step 3: Cross multiply
    66,474x = 89,550 × 89,550
  4. Step 4: Simplify right side
    66,474x = 8,019,202,500
  5. Step 5: Solve for x
    x = 8,019,202,500/66,474
  6. Step 6: Final answer
    x = 120,636.68

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.