Home / 31,728,571.41-43,769,311.99-20,721,764.01

Finding the Fourth Proportional to 31,728,571.41, 43,769,311.99 and 20,721,764.01

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Solution

The fourth proportional to 31,728,571.41, 43,769,311.99 and 20,721,764.01 is: 28,585,508.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,728,571.41 : 43,769,311.99 = 20,721,764.01 : x
  2. Step 2: Convert to fraction form
    31,728,571.41/43,769,311.99 = 20,721,764.01/x
  3. Step 3: Cross multiply
    31,728,571.41x = 43,769,311.99 × 20,721,764.01
  4. Step 4: Simplify right side
    31,728,571.41x = 906,977,353,936,843.62
  5. Step 5: Solve for x
    x = 906,977,353,936,843.62/31,728,571.41
  6. Step 6: Final answer
    x = 28,585,508.70

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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.