Home / 31,105.90-46,680.72-28,131.58

Finding the Fourth Proportional to 31,105.90, 46,680.72 and 28,131.58

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Solution

The fourth proportional to 31,105.90, 46,680.72 and 28,131.58 is: 42,217.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,105.90 : 46,680.72 = 28,131.58 : x
  2. Step 2: Convert to fraction form
    31,105.90/46,680.72 = 28,131.58/x
  3. Step 3: Cross multiply
    31,105.90x = 46,680.72 × 28,131.58
  4. Step 4: Simplify right side
    31,105.90x = 1,313,202,409.14
  5. Step 5: Solve for x
    x = 1,313,202,409.14/31,105.90
  6. Step 6: Final answer
    x = 42,217.15

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1.5x scale

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.