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Finding the Third Proportional to 66,976 and 91,838

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Solution

The third proportional to 66,976 and 91,838 is: 125,928.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,976 : 91,838 = 91,838 : x
  2. Step 2: Convert to fraction form
    66,976/91,838 = 91,838/x
  3. Step 3: Cross multiply
    66,976x = 91,838 × 91,838
  4. Step 4: Simplify right side
    66,976x = 8,434,218,244
  5. Step 5: Solve for x
    x = 8,434,218,244/66,976
  6. Step 6: Final answer
    x = 125,928.96

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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.