Home / 81,205.32-121,824.36-33,823.98

Finding the Fourth Proportional to 81,205.32, 121,824.36 and 33,823.98

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Solution

The fourth proportional to 81,205.32, 121,824.36 and 33,823.98 is: 50,742.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,205.32 : 121,824.36 = 33,823.98 : x
  2. Step 2: Convert to fraction form
    81,205.32/121,824.36 = 33,823.98/x
  3. Step 3: Cross multiply
    81,205.32x = 121,824.36 × 33,823.98
  4. Step 4: Simplify right side
    81,205.32x = 4,120,584,716.15
  5. Step 5: Solve for x
    x = 4,120,584,716.15/81,205.32
  6. Step 6: Final answer
    x = 50,742.79

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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.