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Finding the Third Proportional to 18,411.75 and 39,831.75

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Solution

The third proportional to 18,411.75 and 39,831.75 is: 86,171.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,411.75 : 39,831.75 = 39,831.75 : x
  2. Step 2: Convert to fraction form
    18,411.75/39,831.75 = 39,831.75/x
  3. Step 3: Cross multiply
    18,411.75x = 39,831.75 × 39,831.75
  4. Step 4: Simplify right side
    18,411.75x = 1,586,568,308.06
  5. Step 5: Solve for x
    x = 1,586,568,308.06/18,411.75
  6. Step 6: Final answer
    x = 86,171.51

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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.