Home / 57,089.28-85,879.68-48,979.20

Finding the Fourth Proportional to 57,089.28, 85,879.68 and 48,979.20

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Solution

The fourth proportional to 57,089.28, 85,879.68 and 48,979.20 is: 73,679.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,089.28 : 85,879.68 = 48,979.20 : x
  2. Step 2: Convert to fraction form
    57,089.28/85,879.68 = 48,979.20/x
  3. Step 3: Cross multiply
    57,089.28x = 85,879.68 × 48,979.20
  4. Step 4: Simplify right side
    57,089.28x = 4,206,318,022.66
  5. Step 5: Solve for x
    x = 4,206,318,022.66/57,089.28
  6. Step 6: Final answer
    x = 73,679.65

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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.