Home / 56,747.80-78,311.34-31,253.68

Finding the Fourth Proportional to 56,747.80, 78,311.34 and 31,253.68

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Solution

The fourth proportional to 56,747.80, 78,311.34 and 31,253.68 is: 43,129.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,747.80 : 78,311.34 = 31,253.68 : x
  2. Step 2: Convert to fraction form
    56,747.80/78,311.34 = 31,253.68/x
  3. Step 3: Cross multiply
    56,747.80x = 78,311.34 × 31,253.68
  4. Step 4: Simplify right side
    56,747.80x = 2,447,517,560.73
  5. Step 5: Solve for x
    x = 2,447,517,560.73/56,747.80
  6. Step 6: Final answer
    x = 43,129.73

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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.