Home / 57,043.56-78,724.26-31,891.44

Finding the Fourth Proportional to 57,043.56, 78,724.26 and 31,891.44

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Solution

The fourth proportional to 57,043.56, 78,724.26 and 31,891.44 is: 44,012.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,043.56 : 78,724.26 = 31,891.44 : x
  2. Step 2: Convert to fraction form
    57,043.56/78,724.26 = 31,891.44/x
  3. Step 3: Cross multiply
    57,043.56x = 78,724.26 × 31,891.44
  4. Step 4: Simplify right side
    57,043.56x = 2,510,630,014.33
  5. Step 5: Solve for x
    x = 2,510,630,014.33/57,043.56
  6. Step 6: Final answer
    x = 44,012.51

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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.