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Finding the Third Proportional to 20,150 and 43,419

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Solution

The third proportional to 20,150 and 43,419 is: 93,558.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,150 : 43,419 = 43,419 : x
  2. Step 2: Convert to fraction form
    20,150/43,419 = 43,419/x
  3. Step 3: Cross multiply
    20,150x = 43,419 × 43,419
  4. Step 4: Simplify right side
    20,150x = 1,885,209,561
  5. Step 5: Solve for x
    x = 1,885,209,561/20,150
  6. Step 6: Final answer
    x = 93,558.79

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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.