Home / 80,879.20-121,322.40-27,570.40

Finding the Fourth Proportional to 80,879.20, 121,322.40 and 27,570.40

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Solution

The fourth proportional to 80,879.20, 121,322.40 and 27,570.40 is: 41,356.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,879.20 : 121,322.40 = 27,570.40 : x
  2. Step 2: Convert to fraction form
    80,879.20/121,322.40 = 27,570.40/x
  3. Step 3: Cross multiply
    80,879.20x = 121,322.40 × 27,570.40
  4. Step 4: Simplify right side
    80,879.20x = 3,344,907,096.96
  5. Step 5: Solve for x
    x = 3,344,907,096.96/80,879.20
  6. Step 6: Final answer
    x = 41,356.83

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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.