Home / 57,821.72-86,724.81-15,704.64

Finding the Fourth Proportional to 57,821.72, 86,724.81 and 15,704.64

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Solution

The fourth proportional to 57,821.72, 86,724.81 and 15,704.64 is: 23,554.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,821.72 : 86,724.81 = 15,704.64 : x
  2. Step 2: Convert to fraction form
    57,821.72/86,724.81 = 15,704.64/x
  3. Step 3: Cross multiply
    57,821.72x = 86,724.81 × 15,704.64
  4. Step 4: Simplify right side
    57,821.72x = 1,361,981,920.12
  5. Step 5: Solve for x
    x = 1,361,981,920.12/57,821.72
  6. Step 6: Final answer
    x = 23,554.85

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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.