Home / 90,571.52-124,990.18-50,287.88

Finding the Fourth Proportional to 90,571.52, 124,990.18 and 50,287.88

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Solution

The fourth proportional to 90,571.52, 124,990.18 and 50,287.88 is: 69,398.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,571.52 : 124,990.18 = 50,287.88 : x
  2. Step 2: Convert to fraction form
    90,571.52/124,990.18 = 50,287.88/x
  3. Step 3: Cross multiply
    90,571.52x = 124,990.18 × 50,287.88
  4. Step 4: Simplify right side
    90,571.52x = 6,285,491,173.02
  5. Step 5: Solve for x
    x = 6,285,491,173.02/90,571.52
  6. Step 6: Final answer
    x = 69,398.10

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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.