Home / 71,940.96-99,282.78-40,109.85

Finding the Fourth Proportional to 71,940.96, 99,282.78 and 40,109.85

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Solution

The fourth proportional to 71,940.96, 99,282.78 and 40,109.85 is: 55,353.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,940.96 : 99,282.78 = 40,109.85 : x
  2. Step 2: Convert to fraction form
    71,940.96/99,282.78 = 40,109.85/x
  3. Step 3: Cross multiply
    71,940.96x = 99,282.78 × 40,109.85
  4. Step 4: Simplify right side
    71,940.96x = 3,982,217,413.38
  5. Step 5: Solve for x
    x = 3,982,217,413.38/71,940.96
  6. Step 6: Final answer
    x = 55,353.97

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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.