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Finding the Third Proportional to 39,874 and 86,759

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Solution

The third proportional to 39,874 and 86,759 is: 188,772.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,874 : 86,759 = 86,759 : x
  2. Step 2: Convert to fraction form
    39,874/86,759 = 86,759/x
  3. Step 3: Cross multiply
    39,874x = 86,759 × 86,759
  4. Step 4: Simplify right side
    39,874x = 7,527,124,081
  5. Step 5: Solve for x
    x = 7,527,124,081/39,874
  6. Step 6: Final answer
    x = 188,772.74

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.