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Finding the Third Proportional to 20,149 and 30,171

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Solution

The third proportional to 20,149 and 30,171 is: 45,177.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,149 : 30,171 = 30,171 : x
  2. Step 2: Convert to fraction form
    20,149/30,171 = 30,171/x
  3. Step 3: Cross multiply
    20,149x = 30,171 × 30,171
  4. Step 4: Simplify right side
    20,149x = 910,289,241
  5. Step 5: Solve for x
    x = 910,289,241/20,149
  6. Step 6: Final answer
    x = 45,177.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.