Home / 49,201.20-73,761.30-21,142.80

Finding the Fourth Proportional to 49,201.20, 73,761.30 and 21,142.80

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Solution

The fourth proportional to 49,201.20, 73,761.30 and 21,142.80 is: 31,696.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,201.20 : 73,761.30 = 21,142.80 : x
  2. Step 2: Convert to fraction form
    49,201.20/73,761.30 = 21,142.80/x
  3. Step 3: Cross multiply
    49,201.20x = 73,761.30 × 21,142.80
  4. Step 4: Simplify right side
    49,201.20x = 1,559,520,413.64
  5. Step 5: Solve for x
    x = 1,559,520,413.64/49,201.20
  6. Step 6: Final answer
    x = 31,696.80

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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.