Home / 81,282.52-121,945.69-33,881.86

Finding the Fourth Proportional to 81,282.52, 121,945.69 and 33,881.86

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Solution

The fourth proportional to 81,282.52, 121,945.69 and 33,881.86 is: 50,831.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,282.52 : 121,945.69 = 33,881.86 : x
  2. Step 2: Convert to fraction form
    81,282.52/121,945.69 = 33,881.86/x
  3. Step 3: Cross multiply
    81,282.52x = 121,945.69 × 33,881.86
  4. Step 4: Simplify right side
    81,282.52x = 4,131,746,597.20
  5. Step 5: Solve for x
    x = 4,131,746,597.20/81,282.52
  6. Step 6: Final answer
    x = 50,831.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.