Home / 80,629.68-120,985.44-36,247.44

Finding the Fourth Proportional to 80,629.68, 120,985.44 and 36,247.44

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Solution

The fourth proportional to 80,629.68, 120,985.44 and 36,247.44 is: 54,389.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,629.68 : 120,985.44 = 36,247.44 : x
  2. Step 2: Convert to fraction form
    80,629.68/120,985.44 = 36,247.44/x
  3. Step 3: Cross multiply
    80,629.68x = 120,985.44 × 36,247.44
  4. Step 4: Simplify right side
    80,629.68x = 4,385,412,477.27
  5. Step 5: Solve for x
    x = 4,385,412,477.27/80,629.68
  6. Step 6: Final answer
    x = 54,389.56

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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.