Home / 80,771.04-121,147.92-28,181.52

Finding the Fourth Proportional to 80,771.04, 121,147.92 and 28,181.52

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Solution

The fourth proportional to 80,771.04, 121,147.92 and 28,181.52 is: 42,269.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,771.04 : 121,147.92 = 28,181.52 : x
  2. Step 2: Convert to fraction form
    80,771.04/121,147.92 = 28,181.52/x
  3. Step 3: Cross multiply
    80,771.04x = 121,147.92 × 28,181.52
  4. Step 4: Simplify right side
    80,771.04x = 3,414,132,530.44
  5. Step 5: Solve for x
    x = 3,414,132,530.44/80,771.04
  6. Step 6: Final answer
    x = 42,269.27

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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.