Home / 90,571.56-135,855.18-28,240.44

Finding the Fourth Proportional to 90,571.56, 135,855.18 and 28,240.44

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Solution

The fourth proportional to 90,571.56, 135,855.18 and 28,240.44 is: 42,359.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,571.56 : 135,855.18 = 28,240.44 : x
  2. Step 2: Convert to fraction form
    90,571.56/135,855.18 = 28,240.44/x
  3. Step 3: Cross multiply
    90,571.56x = 135,855.18 × 28,240.44
  4. Step 4: Simplify right side
    90,571.56x = 3,836,610,059.48
  5. Step 5: Solve for x
    x = 3,836,610,059.48/90,571.56
  6. Step 6: Final answer
    x = 42,359.99

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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.