Home / 80,540.32-120,794.05-30,602.91

Finding the Fourth Proportional to 80,540.32, 120,794.05 and 30,602.91

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Solution

The fourth proportional to 80,540.32, 120,794.05 and 30,602.91 is: 45,898.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,540.32 : 120,794.05 = 30,602.91 : x
  2. Step 2: Convert to fraction form
    80,540.32/120,794.05 = 30,602.91/x
  3. Step 3: Cross multiply
    80,540.32x = 120,794.05 × 30,602.91
  4. Step 4: Simplify right side
    80,540.32x = 3,696,649,440.69
  5. Step 5: Solve for x
    x = 3,696,649,440.69/80,540.32
  6. Step 6: Final answer
    x = 45,898.12

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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.