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Finding the Third Proportional to 20,290 and 41,138

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Solution

The third proportional to 20,290 and 41,138 is: 83,407.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,290 : 41,138 = 41,138 : x
  2. Step 2: Convert to fraction form
    20,290/41,138 = 41,138/x
  3. Step 3: Cross multiply
    20,290x = 41,138 × 41,138
  4. Step 4: Simplify right side
    20,290x = 1,692,335,044
  5. Step 5: Solve for x
    x = 1,692,335,044/20,290
  6. Step 6: Final answer
    x = 83,407.35

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Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.