Home / 78,571.04-108,413.68-51,339.92

Finding the Fourth Proportional to 78,571.04, 108,413.68 and 51,339.92

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Solution

The fourth proportional to 78,571.04, 108,413.68 and 51,339.92 is: 70,839.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,571.04 : 108,413.68 = 51,339.92 : x
  2. Step 2: Convert to fraction form
    78,571.04/108,413.68 = 51,339.92/x
  3. Step 3: Cross multiply
    78,571.04x = 108,413.68 × 51,339.92
  4. Step 4: Simplify right side
    78,571.04x = 5,565,949,401.41
  5. Step 5: Solve for x
    x = 5,565,949,401.41/78,571.04
  6. Step 6: Final answer
    x = 70,839.71

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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.