Home / 80,961.76-121,413.49-34,218.28

Finding the Fourth Proportional to 80,961.76, 121,413.49 and 34,218.28

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Solution

The fourth proportional to 80,961.76, 121,413.49 and 34,218.28 is: 51,315.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,961.76 : 121,413.49 = 34,218.28 : x
  2. Step 2: Convert to fraction form
    80,961.76/121,413.49 = 34,218.28/x
  3. Step 3: Cross multiply
    80,961.76x = 121,413.49 × 34,218.28
  4. Step 4: Simplify right side
    80,961.76x = 4,154,560,796.60
  5. Step 5: Solve for x
    x = 4,154,560,796.60/80,961.76
  6. Step 6: Final answer
    x = 51,315.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.