Home / 80,917.28-121,375.71-21,752.94

Finding the Fourth Proportional to 80,917.28, 121,375.71 and 21,752.94

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Solution

The fourth proportional to 80,917.28, 121,375.71 and 21,752.94 is: 32,629.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,917.28 : 121,375.71 = 21,752.94 : x
  2. Step 2: Convert to fraction form
    80,917.28/121,375.71 = 21,752.94/x
  3. Step 3: Cross multiply
    80,917.28x = 121,375.71 × 21,752.94
  4. Step 4: Simplify right side
    80,917.28x = 2,640,278,537.09
  5. Step 5: Solve for x
    x = 2,640,278,537.09/80,917.28
  6. Step 6: Final answer
    x = 32,629.36

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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.