Home / 57,203.92-78,939.30-31,711.36

Finding the Fourth Proportional to 57,203.92, 78,939.30 and 31,711.36

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Solution

The fourth proportional to 57,203.92, 78,939.30 and 31,711.36 is: 43,760.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,203.92 : 78,939.30 = 31,711.36 : x
  2. Step 2: Convert to fraction form
    57,203.92/78,939.30 = 31,711.36/x
  3. Step 3: Cross multiply
    57,203.92x = 78,939.30 × 31,711.36
  4. Step 4: Simplify right side
    57,203.92x = 2,503,272,560.45
  5. Step 5: Solve for x
    x = 2,503,272,560.45/57,203.92
  6. Step 6: Final answer
    x = 43,760.51

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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.