Home / 57,121.36-78,827.46-31,970.86

Finding the Fourth Proportional to 57,121.36, 78,827.46 and 31,970.86

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Solution

The fourth proportional to 57,121.36, 78,827.46 and 31,970.86 is: 44,119.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,121.36 : 78,827.46 = 31,970.86 : x
  2. Step 2: Convert to fraction form
    57,121.36/78,827.46 = 31,970.86/x
  3. Step 3: Cross multiply
    57,121.36x = 78,827.46 × 31,970.86
  4. Step 4: Simplify right side
    57,121.36x = 2,520,181,687.82
  5. Step 5: Solve for x
    x = 2,520,181,687.82/57,121.36
  6. Step 6: Final answer
    x = 44,119.78

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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.