Home / 80,512.08-120,584.19-38,421.72

Finding the Fourth Proportional to 80,512.08, 120,584.19 and 38,421.72

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Solution

The fourth proportional to 80,512.08, 120,584.19 and 38,421.72 is: 57,544.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,512.08 : 120,584.19 = 38,421.72 : x
  2. Step 2: Convert to fraction form
    80,512.08/120,584.19 = 38,421.72/x
  3. Step 3: Cross multiply
    80,512.08x = 120,584.19 × 38,421.72
  4. Step 4: Simplify right side
    80,512.08x = 4,633,051,984.61
  5. Step 5: Solve for x
    x = 4,633,051,984.61/80,512.08
  6. Step 6: Final answer
    x = 57,544.81

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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.