Home / 57,728.20-86,616.60-31,451.80

Finding the Fourth Proportional to 57,728.20, 86,616.60 and 31,451.80

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Solution

The fourth proportional to 57,728.20, 86,616.60 and 31,451.80 is: 47,190.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,728.20 : 86,616.60 = 31,451.80 : x
  2. Step 2: Convert to fraction form
    57,728.20/86,616.60 = 31,451.80/x
  3. Step 3: Cross multiply
    57,728.20x = 86,616.60 × 31,451.80
  4. Step 4: Simplify right side
    57,728.20x = 2,724,247,979.88
  5. Step 5: Solve for x
    x = 2,724,247,979.88/57,728.20
  6. Step 6: Final answer
    x = 47,190.94

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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.