Home / 80,986.44-121,514.75-43,502.78

Finding the Fourth Proportional to 80,986.44, 121,514.75 and 43,502.78

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Solution

The fourth proportional to 80,986.44, 121,514.75 and 43,502.78 is: 65,273.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,986.44 : 121,514.75 = 43,502.78 : x
  2. Step 2: Convert to fraction form
    80,986.44/121,514.75 = 43,502.78/x
  3. Step 3: Cross multiply
    80,986.44x = 121,514.75 × 43,502.78
  4. Step 4: Simplify right side
    80,986.44x = 5,286,229,436.01
  5. Step 5: Solve for x
    x = 5,286,229,436.01/80,986.44
  6. Step 6: Final answer
    x = 65,273.02

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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.