Home / 80,015.76-120,040.08-27,429.36

Finding the Fourth Proportional to 80,015.76, 120,040.08 and 27,429.36

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Solution

The fourth proportional to 80,015.76, 120,040.08 and 27,429.36 is: 41,149.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,015.76 : 120,040.08 = 27,429.36 : x
  2. Step 2: Convert to fraction form
    80,015.76/120,040.08 = 27,429.36/x
  3. Step 3: Cross multiply
    80,015.76x = 120,040.08 × 27,429.36
  4. Step 4: Simplify right side
    80,015.76x = 3,292,622,568.75
  5. Step 5: Solve for x
    x = 3,292,622,568.75/80,015.76
  6. Step 6: Final answer
    x = 41,149.68

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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.