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Finding the Third Proportional to 20,139 and 41,332

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Solution

The third proportional to 20,139 and 41,332 is: 84,827.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,139 : 41,332 = 41,332 : x
  2. Step 2: Convert to fraction form
    20,139/41,332 = 41,332/x
  3. Step 3: Cross multiply
    20,139x = 41,332 × 41,332
  4. Step 4: Simplify right side
    20,139x = 1,708,334,224
  5. Step 5: Solve for x
    x = 1,708,334,224/20,139
  6. Step 6: Final answer
    x = 84,827.16

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.