Home / 57,986.18-87,011.62-31,331.66

Finding the Fourth Proportional to 57,986.18, 87,011.62 and 31,331.66

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Solution

The fourth proportional to 57,986.18, 87,011.62 and 31,331.66 is: 47,014.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,986.18 : 87,011.62 = 31,331.66 : x
  2. Step 2: Convert to fraction form
    57,986.18/87,011.62 = 31,331.66/x
  3. Step 3: Cross multiply
    57,986.18x = 87,011.62 × 31,331.66
  4. Step 4: Simplify right side
    57,986.18x = 2,726,218,469.94
  5. Step 5: Solve for x
    x = 2,726,218,469.94/57,986.18
  6. Step 6: Final answer
    x = 47,014.97

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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.