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Finding the Third Proportional to 54,711 and 85,715

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Solution

The third proportional to 54,711 and 85,715 is: 134,288.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,711 : 85,715 = 85,715 : x
  2. Step 2: Convert to fraction form
    54,711/85,715 = 85,715/x
  3. Step 3: Cross multiply
    54,711x = 85,715 × 85,715
  4. Step 4: Simplify right side
    54,711x = 7,347,061,225
  5. Step 5: Solve for x
    x = 7,347,061,225/54,711
  6. Step 6: Final answer
    x = 134,288.56

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.