Home / 80,811.72-121,269.42-39,236.04

Finding the Fourth Proportional to 80,811.72, 121,269.42 and 39,236.04

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Solution

The fourth proportional to 80,811.72, 121,269.42 and 39,236.04 is: 58,879.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,811.72 : 121,269.42 = 39,236.04 : x
  2. Step 2: Convert to fraction form
    80,811.72/121,269.42 = 39,236.04/x
  3. Step 3: Cross multiply
    80,811.72x = 121,269.42 × 39,236.04
  4. Step 4: Simplify right side
    80,811.72x = 4,758,131,813.90
  5. Step 5: Solve for x
    x = 4,758,131,813.90/80,811.72
  6. Step 6: Final answer
    x = 58,879.23

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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.