Home / 91,717.20-126,571.04-55,413.60

Finding the Fourth Proportional to 91,717.20, 126,571.04 and 55,413.60

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Solution

The fourth proportional to 91,717.20, 126,571.04 and 55,413.60 is: 76,471.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,717.20 : 126,571.04 = 55,413.60 : x
  2. Step 2: Convert to fraction form
    91,717.20/126,571.04 = 55,413.60/x
  3. Step 3: Cross multiply
    91,717.20x = 126,571.04 × 55,413.60
  4. Step 4: Simplify right side
    91,717.20x = 7,013,756,982.14
  5. Step 5: Solve for x
    x = 7,013,756,982.14/91,717.20
  6. Step 6: Final answer
    x = 76,471.56

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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.