Home / 80,509.08-120,579.69-38,418.73

Finding the Fourth Proportional to 80,509.08, 120,579.69 and 38,418.73

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Solution

The fourth proportional to 80,509.08, 120,579.69 and 38,418.73 is: 57,540.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,509.08 : 120,579.69 = 38,418.73 : x
  2. Step 2: Convert to fraction form
    80,509.08/120,579.69 = 38,418.73/x
  3. Step 3: Cross multiply
    80,509.08x = 120,579.69 × 38,418.73
  4. Step 4: Simplify right side
    80,509.08x = 4,632,518,198.50
  5. Step 5: Solve for x
    x = 4,632,518,198.50/80,509.08
  6. Step 6: Final answer
    x = 57,540.32

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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.