Home / 80,658.18-120,987.54-28,055.16

Finding the Fourth Proportional to 80,658.18, 120,987.54 and 28,055.16

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Solution

The fourth proportional to 80,658.18, 120,987.54 and 28,055.16 is: 42,082.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,658.18 : 120,987.54 = 28,055.16 : x
  2. Step 2: Convert to fraction form
    80,658.18/120,987.54 = 28,055.16/x
  3. Step 3: Cross multiply
    80,658.18x = 120,987.54 × 28,055.16
  4. Step 4: Simplify right side
    80,658.18x = 3,394,324,792.71
  5. Step 5: Solve for x
    x = 3,394,324,792.71/80,658.18
  6. Step 6: Final answer
    x = 42,082.83

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1.5x scale

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.