Home / 87,981-121,413.96-50,255.16

Finding the Fourth Proportional to 87,981, 121,413.96 and 50,255.16

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Solution

The fourth proportional to 87,981, 121,413.96 and 50,255.16 is: 69,352.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,981 : 121,413.96 = 50,255.16 : x
  2. Step 2: Convert to fraction form
    87,981/121,413.96 = 50,255.16/x
  3. Step 3: Cross multiply
    87,981x = 121,413.96 × 50,255.16
  4. Step 4: Simplify right side
    87,981x = 6,101,677,986.03
  5. Step 5: Solve for x
    x = 6,101,677,986.03/87,981
  6. Step 6: Final answer
    x = 69,352.22

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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.