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Finding the Third Proportional to 20,121.75 and 43,983

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Solution

The third proportional to 20,121.75 and 43,983 is: 96,139.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,121.75 : 43,983 = 43,983 : x
  2. Step 2: Convert to fraction form
    20,121.75/43,983 = 43,983/x
  3. Step 3: Cross multiply
    20,121.75x = 43,983 × 43,983
  4. Step 4: Simplify right side
    20,121.75x = 1,934,504,289
  5. Step 5: Solve for x
    x = 1,934,504,289/20,121.75
  6. Step 6: Final answer
    x = 96,139.96

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.