Home / 81,650.23-122,443.85-31,723.75

Finding the Fourth Proportional to 81,650.23, 122,443.85 and 31,723.75

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Solution

The fourth proportional to 81,650.23, 122,443.85 and 31,723.75 is: 47,573.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,650.23 : 122,443.85 = 31,723.75 : x
  2. Step 2: Convert to fraction form
    81,650.23/122,443.85 = 31,723.75/x
  3. Step 3: Cross multiply
    81,650.23x = 122,443.85 × 31,723.75
  4. Step 4: Simplify right side
    81,650.23x = 3,884,378,318.80
  5. Step 5: Solve for x
    x = 3,884,378,318.80/81,650.23
  6. Step 6: Final answer
    x = 47,573.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.