Home / 81,485.12-122,227.77-22,321.31

Finding the Fourth Proportional to 81,485.12, 122,227.77 and 22,321.31

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Solution

The fourth proportional to 81,485.12, 122,227.77 and 22,321.31 is: 33,481.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,485.12 : 122,227.77 = 22,321.31 : x
  2. Step 2: Convert to fraction form
    81,485.12/122,227.77 = 22,321.31/x
  3. Step 3: Cross multiply
    81,485.12x = 122,227.77 × 22,321.31
  4. Step 4: Simplify right side
    81,485.12x = 2,728,283,333.64
  5. Step 5: Solve for x
    x = 2,728,283,333.64/81,485.12
  6. Step 6: Final answer
    x = 33,481.98

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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.