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Finding the Third Proportional to 57,612 and 76,896

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Solution

The third proportional to 57,612 and 76,896 is: 102,634.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,612 : 76,896 = 76,896 : x
  2. Step 2: Convert to fraction form
    57,612/76,896 = 76,896/x
  3. Step 3: Cross multiply
    57,612x = 76,896 × 76,896
  4. Step 4: Simplify right side
    57,612x = 5,912,994,816
  5. Step 5: Solve for x
    x = 5,912,994,816/57,612
  6. Step 6: Final answer
    x = 102,634.78

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.