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Finding the Third Proportional to 20,340 and 43,749

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Solution

The third proportional to 20,340 and 43,749 is: 94,099.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,340 : 43,749 = 43,749 : x
  2. Step 2: Convert to fraction form
    20,340/43,749 = 43,749/x
  3. Step 3: Cross multiply
    20,340x = 43,749 × 43,749
  4. Step 4: Simplify right side
    20,340x = 1,913,975,001
  5. Step 5: Solve for x
    x = 1,913,975,001/20,340
  6. Step 6: Final answer
    x = 94,099.07

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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.