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Finding the Third Proportional to 17,876 and 27,777

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Solution

The third proportional to 17,876 and 27,777 is: 43,161.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,876 : 27,777 = 27,777 : x
  2. Step 2: Convert to fraction form
    17,876/27,777 = 27,777/x
  3. Step 3: Cross multiply
    17,876x = 27,777 × 27,777
  4. Step 4: Simplify right side
    17,876x = 771,561,729
  5. Step 5: Solve for x
    x = 771,561,729/17,876
  6. Step 6: Final answer
    x = 43,161.88

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.