Home / 81,486.31-122,229.56-22,322.49

Finding the Fourth Proportional to 81,486.31, 122,229.56 and 22,322.49

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Solution

The fourth proportional to 81,486.31, 122,229.56 and 22,322.49 is: 33,483.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,486.31 : 122,229.56 = 22,322.49 : x
  2. Step 2: Convert to fraction form
    81,486.31/122,229.56 = 22,322.49/x
  3. Step 3: Cross multiply
    81,486.31x = 122,229.56 × 22,322.49
  4. Step 4: Simplify right side
    81,486.31x = 2,728,468,130.80
  5. Step 5: Solve for x
    x = 2,728,468,130.80/81,486.31
  6. Step 6: Final answer
    x = 33,483.76

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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.