Home / 71,912.75-99,240.05-40,083.66

Finding the Fourth Proportional to 71,912.75, 99,240.05 and 40,083.66

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Solution

The fourth proportional to 71,912.75, 99,240.05 and 40,083.66 is: 55,315.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,912.75 : 99,240.05 = 40,083.66 : x
  2. Step 2: Convert to fraction form
    71,912.75/99,240.05 = 40,083.66/x
  3. Step 3: Cross multiply
    71,912.75x = 99,240.05 × 40,083.66
  4. Step 4: Simplify right side
    71,912.75x = 3,977,904,222.16
  5. Step 5: Solve for x
    x = 3,977,904,222.16/71,912.75
  6. Step 6: Final answer
    x = 55,315.71

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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.