Home / 80,479.38-120,716.96-38,389.22

Finding the Fourth Proportional to 80,479.38, 120,716.96 and 38,389.22

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Solution

The fourth proportional to 80,479.38, 120,716.96 and 38,389.22 is: 57,582.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,479.38 : 120,716.96 = 38,389.22 : x
  2. Step 2: Convert to fraction form
    80,479.38/120,716.96 = 38,389.22/x
  3. Step 3: Cross multiply
    80,479.38x = 120,716.96 × 38,389.22
  4. Step 4: Simplify right side
    80,479.38x = 4,634,229,139.64
  5. Step 5: Solve for x
    x = 4,634,229,139.64/80,479.38
  6. Step 6: Final answer
    x = 57,582.81

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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.