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Finding the Third Proportional to 57,103 and 81,170

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Solution

The third proportional to 57,103 and 81,170 is: 115,380.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,103 : 81,170 = 81,170 : x
  2. Step 2: Convert to fraction form
    57,103/81,170 = 81,170/x
  3. Step 3: Cross multiply
    57,103x = 81,170 × 81,170
  4. Step 4: Simplify right side
    57,103x = 6,588,568,900
  5. Step 5: Solve for x
    x = 6,588,568,900/57,103
  6. Step 6: Final answer
    x = 115,380.43

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.