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Finding the Third Proportional to 57,972 and 87,765

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Solution

The third proportional to 57,972 and 87,765 is: 132,869.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,972 : 87,765 = 87,765 : x
  2. Step 2: Convert to fraction form
    57,972/87,765 = 87,765/x
  3. Step 3: Cross multiply
    57,972x = 87,765 × 87,765
  4. Step 4: Simplify right side
    57,972x = 7,702,695,225
  5. Step 5: Solve for x
    x = 7,702,695,225/57,972
  6. Step 6: Final answer
    x = 132,869.23

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.