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Finding the Third Proportional to 18,212 and 37,120

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Solution

The third proportional to 18,212 and 37,120 is: 75,658.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,212 : 37,120 = 37,120 : x
  2. Step 2: Convert to fraction form
    18,212/37,120 = 37,120/x
  3. Step 3: Cross multiply
    18,212x = 37,120 × 37,120
  4. Step 4: Simplify right side
    18,212x = 1,377,894,400
  5. Step 5: Solve for x
    x = 1,377,894,400/18,212
  6. Step 6: Final answer
    x = 75,658.60

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Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.