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Finding the Third Proportional to 18,661.50 and 40,963.50

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Solution

The third proportional to 18,661.50 and 40,963.50 is: 89,918.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,661.50 : 40,963.50 = 40,963.50 : x
  2. Step 2: Convert to fraction form
    18,661.50/40,963.50 = 40,963.50/x
  3. Step 3: Cross multiply
    18,661.50x = 40,963.50 × 40,963.50
  4. Step 4: Simplify right side
    18,661.50x = 1,678,008,332.25
  5. Step 5: Solve for x
    x = 1,678,008,332.25/18,661.50
  6. Step 6: Final answer
    x = 89,918.19

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.