Home / 87,139.26-120,252.24-49,413.51

Finding the Fourth Proportional to 87,139.26, 120,252.24 and 49,413.51

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Solution

The fourth proportional to 87,139.26, 120,252.24 and 49,413.51 is: 68,190.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,139.26 : 120,252.24 = 49,413.51 : x
  2. Step 2: Convert to fraction form
    87,139.26/120,252.24 = 49,413.51/x
  3. Step 3: Cross multiply
    87,139.26x = 120,252.24 × 49,413.51
  4. Step 4: Simplify right side
    87,139.26x = 5,942,085,263.76
  5. Step 5: Solve for x
    x = 5,942,085,263.76/87,139.26
  6. Step 6: Final answer
    x = 68,190.68

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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.