Home / 28,978,081.20-43,467,121.80-21,325,330.80

Finding the Fourth Proportional to 28,978,081.20, 43,467,121.80 and 21,325,330.80

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Solution

The fourth proportional to 28,978,081.20, 43,467,121.80 and 21,325,330.80 is: 31,987,996.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,978,081.20 : 43,467,121.80 = 21,325,330.80 : x
  2. Step 2: Convert to fraction form
    28,978,081.20/43,467,121.80 = 21,325,330.80/x
  3. Step 3: Cross multiply
    28,978,081.20x = 43,467,121.80 × 21,325,330.80
  4. Step 4: Simplify right side
    28,978,081.20x = 926,950,751,308,891.38
  5. Step 5: Solve for x
    x = 926,950,751,308,891.38/28,978,081.20
  6. Step 6: Final answer
    x = 31,987,996.20

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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.