Home / 80,826.94-121,240.41-28,236.88

Finding the Fourth Proportional to 80,826.94, 121,240.41 and 28,236.88

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Solution

The fourth proportional to 80,826.94, 121,240.41 and 28,236.88 is: 42,355.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,826.94 : 121,240.41 = 28,236.88 : x
  2. Step 2: Convert to fraction form
    80,826.94/121,240.41 = 28,236.88/x
  3. Step 3: Cross multiply
    80,826.94x = 121,240.41 × 28,236.88
  4. Step 4: Simplify right side
    80,826.94x = 3,423,450,908.32
  5. Step 5: Solve for x
    x = 3,423,450,908.32/80,826.94
  6. Step 6: Final answer
    x = 42,355.32

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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.