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Finding the Third Proportional to 57,288 and 80,676

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Solution

The third proportional to 57,288 and 80,676 is: 113,612.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,288 : 80,676 = 80,676 : x
  2. Step 2: Convert to fraction form
    57,288/80,676 = 80,676/x
  3. Step 3: Cross multiply
    57,288x = 80,676 × 80,676
  4. Step 4: Simplify right side
    57,288x = 6,508,616,976
  5. Step 5: Solve for x
    x = 6,508,616,976/57,288
  6. Step 6: Final answer
    x = 113,612.22

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.