Home / 80,159.12-120,255.08-27,561.77

Finding the Fourth Proportional to 80,159.12, 120,255.08 and 27,561.77

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Solution

The fourth proportional to 80,159.12, 120,255.08 and 27,561.77 is: 41,348.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,159.12 : 120,255.08 = 27,561.77 : x
  2. Step 2: Convert to fraction form
    80,159.12/120,255.08 = 27,561.77/x
  3. Step 3: Cross multiply
    80,159.12x = 120,255.08 × 27,561.77
  4. Step 4: Simplify right side
    80,159.12x = 3,314,442,117.21
  5. Step 5: Solve for x
    x = 3,314,442,117.21/80,159.12
  6. Step 6: Final answer
    x = 41,348.29

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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.