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Finding the Third Proportional to 20,554 and 45,149

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Solution

The third proportional to 20,554 and 45,149 is: 99,174.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,554 : 45,149 = 45,149 : x
  2. Step 2: Convert to fraction form
    20,554/45,149 = 45,149/x
  3. Step 3: Cross multiply
    20,554x = 45,149 × 45,149
  4. Step 4: Simplify right side
    20,554x = 2,038,432,201
  5. Step 5: Solve for x
    x = 2,038,432,201/20,554
  6. Step 6: Final answer
    x = 99,174.48

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.