Home / 54,695,912.20-81,992,546.70-20,640,142.60

Finding the Fourth Proportional to 54,695,912.20, 81,992,546.70 and 20,640,142.60

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Solution

The fourth proportional to 54,695,912.20, 81,992,546.70 and 20,640,142.60 is: 30,940,847.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,695,912.20 : 81,992,546.70 = 20,640,142.60 : x
  2. Step 2: Convert to fraction form
    54,695,912.20/81,992,546.70 = 20,640,142.60/x
  3. Step 3: Cross multiply
    54,695,912.20x = 81,992,546.70 × 20,640,142.60
  4. Step 4: Simplify right side
    54,695,912.20x = 1,692,337,856,025,159.50
  5. Step 5: Solve for x
    x = 1,692,337,856,025,159.50/54,695,912.20
  6. Step 6: Final answer
    x = 30,940,847.09

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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.