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Finding the Third Proportional to 20,090 and 38,356

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Solution

The third proportional to 20,090 and 38,356 is: 73,229.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,090 : 38,356 = 38,356 : x
  2. Step 2: Convert to fraction form
    20,090/38,356 = 38,356/x
  3. Step 3: Cross multiply
    20,090x = 38,356 × 38,356
  4. Step 4: Simplify right side
    20,090x = 1,471,182,736
  5. Step 5: Solve for x
    x = 1,471,182,736/20,090
  6. Step 6: Final answer
    x = 73,229.60

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Why These Related Problems?

These problems maintain the same ratio (1.91) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.