Home / 80,583.52-120,865.68-21,423.52

Finding the Fourth Proportional to 80,583.52, 120,865.68 and 21,423.52

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Solution

The fourth proportional to 80,583.52, 120,865.68 and 21,423.52 is: 32,132.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,583.52 : 120,865.68 = 21,423.52 : x
  2. Step 2: Convert to fraction form
    80,583.52/120,865.68 = 21,423.52/x
  3. Step 3: Cross multiply
    80,583.52x = 120,865.68 × 21,423.52
  4. Step 4: Simplify right side
    80,583.52x = 2,589,368,312.79
  5. Step 5: Solve for x
    x = 2,589,368,312.79/80,583.52
  6. Step 6: Final answer
    x = 32,132.73

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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.