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Finding the Third Proportional to 21,949 and 33,115

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Solution

The third proportional to 21,949 and 33,115 is: 49,961.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,949 : 33,115 = 33,115 : x
  2. Step 2: Convert to fraction form
    21,949/33,115 = 33,115/x
  3. Step 3: Cross multiply
    21,949x = 33,115 × 33,115
  4. Step 4: Simplify right side
    21,949x = 1,096,603,225
  5. Step 5: Solve for x
    x = 1,096,603,225/21,949
  6. Step 6: Final answer
    x = 49,961.42

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.