Home / 81,775.94-122,591.19-31,844.42

Finding the Fourth Proportional to 81,775.94, 122,591.19 and 31,844.42

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Solution

The fourth proportional to 81,775.94, 122,591.19 and 31,844.42 is: 47,738.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,775.94 : 122,591.19 = 31,844.42 : x
  2. Step 2: Convert to fraction form
    81,775.94/122,591.19 = 31,844.42/x
  3. Step 3: Cross multiply
    81,775.94x = 122,591.19 × 31,844.42
  4. Step 4: Simplify right side
    81,775.94x = 3,903,845,342.66
  5. Step 5: Solve for x
    x = 3,903,845,342.66/81,775.94
  6. Step 6: Final answer
    x = 47,738.31

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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.