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Finding the Third Proportional to 66,917 and 91,759

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Solution

The third proportional to 66,917 and 91,759 is: 125,823.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,917 : 91,759 = 91,759 : x
  2. Step 2: Convert to fraction form
    66,917/91,759 = 91,759/x
  3. Step 3: Cross multiply
    66,917x = 91,759 × 91,759
  4. Step 4: Simplify right side
    66,917x = 8,419,714,081
  5. Step 5: Solve for x
    x = 8,419,714,081/66,917
  6. Step 6: Final answer
    x = 125,823.24

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.