Home / 80,986.42-121,514.70-43,502.74

Finding the Fourth Proportional to 80,986.42, 121,514.70 and 43,502.74

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Solution

The fourth proportional to 80,986.42, 121,514.70 and 43,502.74 is: 65,272.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,986.42 : 121,514.70 = 43,502.74 : x
  2. Step 2: Convert to fraction form
    80,986.42/121,514.70 = 43,502.74/x
  3. Step 3: Cross multiply
    80,986.42x = 121,514.70 × 43,502.74
  4. Step 4: Simplify right side
    80,986.42x = 5,286,222,400.28
  5. Step 5: Solve for x
    x = 5,286,222,400.28/80,986.42
  6. Step 6: Final answer
    x = 65,272.95

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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.