Home / 31,120.62-46,680.89-7,747.08

Finding the Fourth Proportional to 31,120.62, 46,680.89 and 7,747.08

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Solution

The fourth proportional to 31,120.62, 46,680.89 and 7,747.08 is: 11,620.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,120.62 : 46,680.89 = 7,747.08 : x
  2. Step 2: Convert to fraction form
    31,120.62/46,680.89 = 7,747.08/x
  3. Step 3: Cross multiply
    31,120.62x = 46,680.89 × 7,747.08
  4. Step 4: Simplify right side
    31,120.62x = 361,640,550.57
  5. Step 5: Solve for x
    x = 361,640,550.57/31,120.62
  6. Step 6: Final answer
    x = 11,620.61

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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.