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Finding the Third Proportional to 68,125.50 and 91,057.50

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Solution

The third proportional to 68,125.50 and 91,057.50 is: 121,708.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,125.50 : 91,057.50 = 91,057.50 : x
  2. Step 2: Convert to fraction form
    68,125.50/91,057.50 = 91,057.50/x
  3. Step 3: Cross multiply
    68,125.50x = 91,057.50 × 91,057.50
  4. Step 4: Simplify right side
    68,125.50x = 8,291,468,306.25
  5. Step 5: Solve for x
    x = 8,291,468,306.25/68,125.50
  6. Step 6: Final answer
    x = 121,708.73

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.