Home / 81,481.31-122,222.06-22,317.49

Finding the Fourth Proportional to 81,481.31, 122,222.06 and 22,317.49

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Solution

The fourth proportional to 81,481.31, 122,222.06 and 22,317.49 is: 33,476.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,481.31 : 122,222.06 = 22,317.49 : x
  2. Step 2: Convert to fraction form
    81,481.31/122,222.06 = 22,317.49/x
  3. Step 3: Cross multiply
    81,481.31x = 122,222.06 × 22,317.49
  4. Step 4: Simplify right side
    81,481.31x = 2,727,688,879.13
  5. Step 5: Solve for x
    x = 2,727,688,879.13/81,481.31
  6. Step 6: Final answer
    x = 33,476.25

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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.