Home / 81,153.21-121,624.34-33,065.69

Finding the Fourth Proportional to 81,153.21, 121,624.34 and 33,065.69

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Solution

The fourth proportional to 81,153.21, 121,624.34 and 33,065.69 is: 49,555.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,153.21 : 121,624.34 = 33,065.69 : x
  2. Step 2: Convert to fraction form
    81,153.21/121,624.34 = 33,065.69/x
  3. Step 3: Cross multiply
    81,153.21x = 121,624.34 × 33,065.69
  4. Step 4: Simplify right side
    81,153.21x = 4,021,591,949.44
  5. Step 5: Solve for x
    x = 4,021,591,949.44/81,153.21
  6. Step 6: Final answer
    x = 49,555.55

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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.