Home / 80,208.20-120,530.40-42,794.71

Finding the Fourth Proportional to 80,208.20, 120,530.40 and 42,794.71

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Solution

The fourth proportional to 80,208.20, 120,530.40 and 42,794.71 is: 64,308.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,208.20 : 120,530.40 = 42,794.71 : x
  2. Step 2: Convert to fraction form
    80,208.20/120,530.40 = 42,794.71/x
  3. Step 3: Cross multiply
    80,208.20x = 120,530.40 × 42,794.71
  4. Step 4: Simplify right side
    80,208.20x = 5,158,063,052.38
  5. Step 5: Solve for x
    x = 5,158,063,052.38/80,208.20
  6. Step 6: Final answer
    x = 64,308.42

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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.