Home / 31,287.78-43,143.81-25,579.86

Finding the Fourth Proportional to 31,287.78, 43,143.81 and 25,579.86

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Solution

The fourth proportional to 31,287.78, 43,143.81 and 25,579.86 is: 35,272.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,287.78 : 43,143.81 = 25,579.86 : x
  2. Step 2: Convert to fraction form
    31,287.78/43,143.81 = 25,579.86/x
  3. Step 3: Cross multiply
    31,287.78x = 43,143.81 × 25,579.86
  4. Step 4: Simplify right side
    31,287.78x = 1,103,612,619.67
  5. Step 5: Solve for x
    x = 1,103,612,619.67/31,287.78
  6. Step 6: Final answer
    x = 35,272.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.