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Finding the Third Proportional to 64,728.50 and 87,452

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Solution

The third proportional to 64,728.50 and 87,452 is: 118,152.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,728.50 : 87,452 = 87,452 : x
  2. Step 2: Convert to fraction form
    64,728.50/87,452 = 87,452/x
  3. Step 3: Cross multiply
    64,728.50x = 87,452 × 87,452
  4. Step 4: Simplify right side
    64,728.50x = 7,647,852,304
  5. Step 5: Solve for x
    x = 7,647,852,304/64,728.50
  6. Step 6: Final answer
    x = 118,152.78

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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.