Home / 40,201.11-55,413.45-31,689.36

Finding the Fourth Proportional to 40,201.11, 55,413.45 and 31,689.36

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Solution

The fourth proportional to 40,201.11, 55,413.45 and 31,689.36 is: 43,680.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,201.11 : 55,413.45 = 31,689.36 : x
  2. Step 2: Convert to fraction form
    40,201.11/55,413.45 = 31,689.36/x
  3. Step 3: Cross multiply
    40,201.11x = 55,413.45 × 31,689.36
  4. Step 4: Simplify right side
    40,201.11x = 1,756,016,765.89
  5. Step 5: Solve for x
    x = 1,756,016,765.89/40,201.11
  6. Step 6: Final answer
    x = 43,680.80

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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.