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Finding the Third Proportional to 66,976.13 and 90,960.75

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Solution

The third proportional to 66,976.13 and 90,960.75 is: 123,534.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,976.13 : 90,960.75 = 90,960.75 : x
  2. Step 2: Convert to fraction form
    66,976.13/90,960.75 = 90,960.75/x
  3. Step 3: Cross multiply
    66,976.13x = 90,960.75 × 90,960.75
  4. Step 4: Simplify right side
    66,976.13x = 8,273,858,040.56
  5. Step 5: Solve for x
    x = 8,273,858,040.56/66,976.13
  6. Step 6: Final answer
    x = 123,534.44

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.