Home / 80,514.09-120,791.51-56,867.81

Finding the Fourth Proportional to 80,514.09, 120,791.51 and 56,867.81

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Solution

The fourth proportional to 80,514.09, 120,791.51 and 56,867.81 is: 85,316.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,514.09 : 120,791.51 = 56,867.81 : x
  2. Step 2: Convert to fraction form
    80,514.09/120,791.51 = 56,867.81/x
  3. Step 3: Cross multiply
    80,514.09x = 120,791.51 × 56,867.81
  4. Step 4: Simplify right side
    80,514.09x = 6,869,148,355.95
  5. Step 5: Solve for x
    x = 6,869,148,355.95/80,514.09
  6. Step 6: Final answer
    x = 85,316.10

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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.