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Finding the Third Proportional to 27,940 and 42,126

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Solution

The third proportional to 27,940 and 42,126 is: 63,514.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,940 : 42,126 = 42,126 : x
  2. Step 2: Convert to fraction form
    27,940/42,126 = 42,126/x
  3. Step 3: Cross multiply
    27,940x = 42,126 × 42,126
  4. Step 4: Simplify right side
    27,940x = 1,774,599,876
  5. Step 5: Solve for x
    x = 1,774,599,876/27,940
  6. Step 6: Final answer
    x = 63,514.67

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.