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Finding the Third Proportional to 45,259 and 99,439

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Solution

The third proportional to 45,259 and 99,439 is: 218,478.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,259 : 99,439 = 99,439 : x
  2. Step 2: Convert to fraction form
    45,259/99,439 = 99,439/x
  3. Step 3: Cross multiply
    45,259x = 99,439 × 99,439
  4. Step 4: Simplify right side
    45,259x = 9,888,114,721
  5. Step 5: Solve for x
    x = 9,888,114,721/45,259
  6. Step 6: Final answer
    x = 218,478.42

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.