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Finding the Third Proportional to 20,286 and 47,131

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Solution

The third proportional to 20,286 and 47,131 is: 109,500.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,286 : 47,131 = 47,131 : x
  2. Step 2: Convert to fraction form
    20,286/47,131 = 47,131/x
  3. Step 3: Cross multiply
    20,286x = 47,131 × 47,131
  4. Step 4: Simplify right side
    20,286x = 2,221,331,161
  5. Step 5: Solve for x
    x = 2,221,331,161/20,286
  6. Step 6: Final answer
    x = 109,500.70

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Why These Related Problems?

These problems maintain the same ratio (2.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.