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Finding the Third Proportional to 21,325 and 45,749

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Solution

The third proportional to 21,325 and 45,749 is: 98,146.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,325 : 45,749 = 45,749 : x
  2. Step 2: Convert to fraction form
    21,325/45,749 = 45,749/x
  3. Step 3: Cross multiply
    21,325x = 45,749 × 45,749
  4. Step 4: Simplify right side
    21,325x = 2,092,971,001
  5. Step 5: Solve for x
    x = 2,092,971,001/21,325
  6. Step 6: Final answer
    x = 98,146.35

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.