Home / 80,530.20-120,658.14-52,407.54

Finding the Fourth Proportional to 80,530.20, 120,658.14 and 52,407.54

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Solution

The fourth proportional to 80,530.20, 120,658.14 and 52,407.54 is: 78,522.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,530.20 : 120,658.14 = 52,407.54 : x
  2. Step 2: Convert to fraction form
    80,530.20/120,658.14 = 52,407.54/x
  3. Step 3: Cross multiply
    80,530.20x = 120,658.14 × 52,407.54
  4. Step 4: Simplify right side
    80,530.20x = 6,323,396,298.38
  5. Step 5: Solve for x
    x = 6,323,396,298.38/80,530.20
  6. Step 6: Final answer
    x = 78,522.05

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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.