Home / 90,422.26-124,784.21-50,137.72

Finding the Fourth Proportional to 90,422.26, 124,784.21 and 50,137.72

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Solution

The fourth proportional to 90,422.26, 124,784.21 and 50,137.72 is: 69,190.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,422.26 : 124,784.21 = 50,137.72 : x
  2. Step 2: Convert to fraction form
    90,422.26/124,784.21 = 50,137.72/x
  3. Step 3: Cross multiply
    90,422.26x = 124,784.21 × 50,137.72
  4. Step 4: Simplify right side
    90,422.26x = 6,256,395,594.78
  5. Step 5: Solve for x
    x = 6,256,395,594.78/90,422.26
  6. Step 6: Final answer
    x = 69,190.88

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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.