Home / 80,288.16-120,650.13-42,874.26

Finding the Fourth Proportional to 80,288.16, 120,650.13 and 42,874.26

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Solution

The fourth proportional to 80,288.16, 120,650.13 and 42,874.26 is: 64,427.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,288.16 : 120,650.13 = 42,874.26 : x
  2. Step 2: Convert to fraction form
    80,288.16/120,650.13 = 42,874.26/x
  3. Step 3: Cross multiply
    80,288.16x = 120,650.13 × 42,874.26
  4. Step 4: Simplify right side
    80,288.16x = 5,172,785,042.65
  5. Step 5: Solve for x
    x = 5,172,785,042.65/80,288.16
  6. Step 6: Final answer
    x = 64,427.74

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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.