Home / 57,078.60-78,766.20-31,927.56

Finding the Fourth Proportional to 57,078.60, 78,766.20 and 31,927.56

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Solution

The fourth proportional to 57,078.60, 78,766.20 and 31,927.56 is: 44,058.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,078.60 : 78,766.20 = 31,927.56 : x
  2. Step 2: Convert to fraction form
    57,078.60/78,766.20 = 31,927.56/x
  3. Step 3: Cross multiply
    57,078.60x = 78,766.20 × 31,927.56
  4. Step 4: Simplify right side
    57,078.60x = 2,514,812,576.47
  5. Step 5: Solve for x
    x = 2,514,812,576.47/57,078.60
  6. Step 6: Final answer
    x = 44,058.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.