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Finding the Third Proportional to 18,156 and 40,200

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Solution

The third proportional to 18,156 and 40,200 is: 89,008.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,156 : 40,200 = 40,200 : x
  2. Step 2: Convert to fraction form
    18,156/40,200 = 40,200/x
  3. Step 3: Cross multiply
    18,156x = 40,200 × 40,200
  4. Step 4: Simplify right side
    18,156x = 1,616,040,000
  5. Step 5: Solve for x
    x = 1,616,040,000/18,156
  6. Step 6: Final answer
    x = 89,008.59

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.