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Finding the Third Proportional to 18,920 and 41,296

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Solution

The third proportional to 18,920 and 41,296 is: 90,135.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,920 : 41,296 = 41,296 : x
  2. Step 2: Convert to fraction form
    18,920/41,296 = 41,296/x
  3. Step 3: Cross multiply
    18,920x = 41,296 × 41,296
  4. Step 4: Simplify right side
    18,920x = 1,705,359,616
  5. Step 5: Solve for x
    x = 1,705,359,616/18,920
  6. Step 6: Final answer
    x = 90,135.29

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.