Home / 80,366.08-120,557.22-21,205.84

Finding the Fourth Proportional to 80,366.08, 120,557.22 and 21,205.84

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Solution

The fourth proportional to 80,366.08, 120,557.22 and 21,205.84 is: 31,810.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,366.08 : 120,557.22 = 21,205.84 : x
  2. Step 2: Convert to fraction form
    80,366.08/120,557.22 = 21,205.84/x
  3. Step 3: Cross multiply
    80,366.08x = 120,557.22 × 21,205.84
  4. Step 4: Simplify right side
    80,366.08x = 2,556,517,118.16
  5. Step 5: Solve for x
    x = 2,556,517,118.16/80,366.08
  6. Step 6: Final answer
    x = 31,810.90

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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.