Home / 81,723.09-112,745.19-51,500.37

Finding the Fourth Proportional to 81,723.09, 112,745.19 and 51,500.37

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Solution

The fourth proportional to 81,723.09, 112,745.19 and 51,500.37 is: 71,049.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,723.09 : 112,745.19 = 51,500.37 : x
  2. Step 2: Convert to fraction form
    81,723.09/112,745.19 = 51,500.37/x
  3. Step 3: Cross multiply
    81,723.09x = 112,745.19 × 51,500.37
  4. Step 4: Simplify right side
    81,723.09x = 5,806,419,000.72
  5. Step 5: Solve for x
    x = 5,806,419,000.72/81,723.09
  6. Step 6: Final answer
    x = 71,049.92

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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.