Home / 90,427.68-135,660.15-31,255.56

Finding the Fourth Proportional to 90,427.68, 135,660.15 and 31,255.56

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Solution

The fourth proportional to 90,427.68, 135,660.15 and 31,255.56 is: 46,889.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,427.68 : 135,660.15 = 31,255.56 : x
  2. Step 2: Convert to fraction form
    90,427.68/135,660.15 = 31,255.56/x
  3. Step 3: Cross multiply
    90,427.68x = 135,660.15 × 31,255.56
  4. Step 4: Simplify right side
    90,427.68x = 4,240,133,957.93
  5. Step 5: Solve for x
    x = 4,240,133,957.93/90,427.68
  6. Step 6: Final answer
    x = 46,889.78

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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.