Home / 80,350.19-120,511.58-21,186.44

Finding the Fourth Proportional to 80,350.19, 120,511.58 and 21,186.44

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Solution

The fourth proportional to 80,350.19, 120,511.58 and 21,186.44 is: 31,776.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,350.19 : 120,511.58 = 21,186.44 : x
  2. Step 2: Convert to fraction form
    80,350.19/120,511.58 = 21,186.44/x
  3. Step 3: Cross multiply
    80,350.19x = 120,511.58 × 21,186.44
  4. Step 4: Simplify right side
    80,350.19x = 2,553,210,650.49
  5. Step 5: Solve for x
    x = 2,553,210,650.49/80,350.19
  6. Step 6: Final answer
    x = 31,776.04

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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.