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Finding the Third Proportional to 40,305 and 86,442

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Solution

The third proportional to 40,305 and 86,442 is: 185,391.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,305 : 86,442 = 86,442 : x
  2. Step 2: Convert to fraction form
    40,305/86,442 = 86,442/x
  3. Step 3: Cross multiply
    40,305x = 86,442 × 86,442
  4. Step 4: Simplify right side
    40,305x = 7,472,219,364
  5. Step 5: Solve for x
    x = 7,472,219,364/40,305
  6. Step 6: Final answer
    x = 185,391.87

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.