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Finding the Third Proportional to 18,520.31 and 39,936.38

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Solution

The third proportional to 18,520.31 and 39,936.38 is: 86,117.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,520.31 : 39,936.38 = 39,936.38 : x
  2. Step 2: Convert to fraction form
    18,520.31/39,936.38 = 39,936.38/x
  3. Step 3: Cross multiply
    18,520.31x = 39,936.38 × 39,936.38
  4. Step 4: Simplify right side
    18,520.31x = 1,594,914,048.14
  5. Step 5: Solve for x
    x = 1,594,914,048.14/18,520.31
  6. Step 6: Final answer
    x = 86,117.02

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.