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Finding the Third Proportional to 39,876 and 59,991

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Solution

The third proportional to 39,876 and 59,991 is: 90,252.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,876 : 59,991 = 59,991 : x
  2. Step 2: Convert to fraction form
    39,876/59,991 = 59,991/x
  3. Step 3: Cross multiply
    39,876x = 59,991 × 59,991
  4. Step 4: Simplify right side
    39,876x = 3,598,920,081
  5. Step 5: Solve for x
    x = 3,598,920,081/39,876
  6. Step 6: Final answer
    x = 90,252.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.