Home / 87,969.30-121,413.89-50,243.55

Finding the Fourth Proportional to 87,969.30, 121,413.89 and 50,243.55

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Solution

The fourth proportional to 87,969.30, 121,413.89 and 50,243.55 is: 69,345.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,969.30 : 121,413.89 = 50,243.55 : x
  2. Step 2: Convert to fraction form
    87,969.30/121,413.89 = 50,243.55/x
  3. Step 3: Cross multiply
    87,969.30x = 121,413.89 × 50,243.55
  4. Step 4: Simplify right side
    87,969.30x = 6,100,264,601.69
  5. Step 5: Solve for x
    x = 6,100,264,601.69/87,969.30
  6. Step 6: Final answer
    x = 69,345.38

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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.