Home / 90,431.26-124,789.05-50,143.54

Finding the Fourth Proportional to 90,431.26, 124,789.05 and 50,143.54

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Solution

The fourth proportional to 90,431.26, 124,789.05 and 50,143.54 is: 69,194.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,431.26 : 124,789.05 = 50,143.54 : x
  2. Step 2: Convert to fraction form
    90,431.26/124,789.05 = 50,143.54/x
  3. Step 3: Cross multiply
    90,431.26x = 124,789.05 × 50,143.54
  4. Step 4: Simplify right side
    90,431.26x = 6,257,364,720.24
  5. Step 5: Solve for x
    x = 6,257,364,720.24/90,431.26
  6. Step 6: Final answer
    x = 69,194.71

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1.5x scale

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.