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Finding the Third Proportional to 18,481 and 43,390

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Solution

The third proportional to 18,481 and 43,390 is: 101,871.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,481 : 43,390 = 43,390 : x
  2. Step 2: Convert to fraction form
    18,481/43,390 = 43,390/x
  3. Step 3: Cross multiply
    18,481x = 43,390 × 43,390
  4. Step 4: Simplify right side
    18,481x = 1,882,692,100
  5. Step 5: Solve for x
    x = 1,882,692,100/18,481
  6. Step 6: Final answer
    x = 101,871.77

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Why These Related Problems?

These problems maintain the same ratio (2.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.