Home / 81,333.21-121,958.89-33,936.02

Finding the Fourth Proportional to 81,333.21, 121,958.89 and 33,936.02

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Solution

The fourth proportional to 81,333.21, 121,958.89 and 33,936.02 is: 50,886.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,333.21 : 121,958.89 = 33,936.02 : x
  2. Step 2: Convert to fraction form
    81,333.21/121,958.89 = 33,936.02/x
  3. Step 3: Cross multiply
    81,333.21x = 121,958.89 × 33,936.02
  4. Step 4: Simplify right side
    81,333.21x = 4,138,798,635.58
  5. Step 5: Solve for x
    x = 4,138,798,635.58/81,333.21
  6. Step 6: Final answer
    x = 50,886.95

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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.