Home / 57,214.20-78,960.24-31,728.54

Finding the Fourth Proportional to 57,214.20, 78,960.24 and 31,728.54

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Solution

The fourth proportional to 57,214.20, 78,960.24 and 31,728.54 is: 43,787.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,214.20 : 78,960.24 = 31,728.54 : x
  2. Step 2: Convert to fraction form
    57,214.20/78,960.24 = 31,728.54/x
  3. Step 3: Cross multiply
    57,214.20x = 78,960.24 × 31,728.54
  4. Step 4: Simplify right side
    57,214.20x = 2,505,293,133.25
  5. Step 5: Solve for x
    x = 2,505,293,133.25/57,214.20
  6. Step 6: Final answer
    x = 43,787.96

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1.5x scale

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.