Home / 80,803.87-121,163.72-30,161.25

Finding the Fourth Proportional to 80,803.87, 121,163.72 and 30,161.25

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Solution

The fourth proportional to 80,803.87, 121,163.72 and 30,161.25 is: 45,226.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,803.87 : 121,163.72 = 30,161.25 : x
  2. Step 2: Convert to fraction form
    80,803.87/121,163.72 = 30,161.25/x
  3. Step 3: Cross multiply
    80,803.87x = 121,163.72 × 30,161.25
  4. Step 4: Simplify right side
    80,803.87x = 3,654,449,099.04
  5. Step 5: Solve for x
    x = 3,654,449,099.04/80,803.87
  6. Step 6: Final answer
    x = 45,226.17

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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.