Home / 87,940.80-121,413.33-67,759.38

Finding the Fourth Proportional to 87,940.80, 121,413.33 and 67,759.38

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Solution

The fourth proportional to 87,940.80, 121,413.33 and 67,759.38 is: 93,550.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,940.80 : 121,413.33 = 67,759.38 : x
  2. Step 2: Convert to fraction form
    87,940.80/121,413.33 = 67,759.38/x
  3. Step 3: Cross multiply
    87,940.80x = 121,413.33 × 67,759.38
  4. Step 4: Simplify right side
    87,940.80x = 8,226,891,964.54
  5. Step 5: Solve for x
    x = 8,226,891,964.54/87,940.80
  6. Step 6: Final answer
    x = 93,550.34

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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.