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Finding the Third Proportional to 39,990 and 57,606

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Solution

The third proportional to 39,990 and 57,606 is: 82,982.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,990 : 57,606 = 57,606 : x
  2. Step 2: Convert to fraction form
    39,990/57,606 = 57,606/x
  3. Step 3: Cross multiply
    39,990x = 57,606 × 57,606
  4. Step 4: Simplify right side
    39,990x = 3,318,451,236
  5. Step 5: Solve for x
    x = 3,318,451,236/39,990
  6. Step 6: Final answer
    x = 82,982.03

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.