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Finding the Third Proportional to 18,550 and 39,800

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Solution

The third proportional to 18,550 and 39,800 is: 85,392.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,550 : 39,800 = 39,800 : x
  2. Step 2: Convert to fraction form
    18,550/39,800 = 39,800/x
  3. Step 3: Cross multiply
    18,550x = 39,800 × 39,800
  4. Step 4: Simplify right side
    18,550x = 1,584,040,000
  5. Step 5: Solve for x
    x = 1,584,040,000/18,550
  6. Step 6: Final answer
    x = 85,392.99

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.