Home / 80,879.76-121,336.04-28,326.15

Finding the Fourth Proportional to 80,879.76, 121,336.04 and 28,326.15

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Solution

The fourth proportional to 80,879.76, 121,336.04 and 28,326.15 is: 42,494.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,879.76 : 121,336.04 = 28,326.15 : x
  2. Step 2: Convert to fraction form
    80,879.76/121,336.04 = 28,326.15/x
  3. Step 3: Cross multiply
    80,879.76x = 121,336.04 × 28,326.15
  4. Step 4: Simplify right side
    80,879.76x = 3,436,982,940.26
  5. Step 5: Solve for x
    x = 3,436,982,940.26/80,879.76
  6. Step 6: Final answer
    x = 42,494.97

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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.