Home / 80,400.95-120,516.33-27,042.13

Finding the Fourth Proportional to 80,400.95, 120,516.33 and 27,042.13

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Solution

The fourth proportional to 80,400.95, 120,516.33 and 27,042.13 is: 40,534.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,400.95 : 120,516.33 = 27,042.13 : x
  2. Step 2: Convert to fraction form
    80,400.95/120,516.33 = 27,042.13/x
  3. Step 3: Cross multiply
    80,400.95x = 120,516.33 × 27,042.13
  4. Step 4: Simplify right side
    80,400.95x = 3,259,018,515.04
  5. Step 5: Solve for x
    x = 3,259,018,515.04/80,400.95
  6. Step 6: Final answer
    x = 40,534.58

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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.