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Finding the Third Proportional to 20,447 and 43,108

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Solution

The third proportional to 20,447 and 43,108 is: 90,883.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,447 : 43,108 = 43,108 : x
  2. Step 2: Convert to fraction form
    20,447/43,108 = 43,108/x
  3. Step 3: Cross multiply
    20,447x = 43,108 × 43,108
  4. Step 4: Simplify right side
    20,447x = 1,858,299,664
  5. Step 5: Solve for x
    x = 1,858,299,664/20,447
  6. Step 6: Final answer
    x = 90,883.73

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.