Home / 80,633.20-120,880.32-35,620.36

Finding the Fourth Proportional to 80,633.20, 120,880.32 and 35,620.36

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Solution

The fourth proportional to 80,633.20, 120,880.32 and 35,620.36 is: 53,399.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,633.20 : 120,880.32 = 35,620.36 : x
  2. Step 2: Convert to fraction form
    80,633.20/120,880.32 = 35,620.36/x
  3. Step 3: Cross multiply
    80,633.20x = 120,880.32 × 35,620.36
  4. Step 4: Simplify right side
    80,633.20x = 4,305,800,515.32
  5. Step 5: Solve for x
    x = 4,305,800,515.32/80,633.20
  6. Step 6: Final answer
    x = 53,399.85

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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.