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Finding the Third Proportional to 21,891 and 48,885

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Solution

The third proportional to 21,891 and 48,885 is: 109,165.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,891 : 48,885 = 48,885 : x
  2. Step 2: Convert to fraction form
    21,891/48,885 = 48,885/x
  3. Step 3: Cross multiply
    21,891x = 48,885 × 48,885
  4. Step 4: Simplify right side
    21,891x = 2,389,743,225
  5. Step 5: Solve for x
    x = 2,389,743,225/21,891
  6. Step 6: Final answer
    x = 109,165.56

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Why These Related Problems?

These problems maintain the same ratio (2.23) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.