Home / 80,826.24-121,460.88-76,240.80

Finding the Fourth Proportional to 80,826.24, 121,460.88 and 76,240.80

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Solution

The fourth proportional to 80,826.24, 121,460.88 and 76,240.80 is: 114,570.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,826.24 : 121,460.88 = 76,240.80 : x
  2. Step 2: Convert to fraction form
    80,826.24/121,460.88 = 76,240.80/x
  3. Step 3: Cross multiply
    80,826.24x = 121,460.88 × 76,240.80
  4. Step 4: Simplify right side
    80,826.24x = 9,260,274,659.90
  5. Step 5: Solve for x
    x = 9,260,274,659.90/80,826.24
  6. Step 6: Final answer
    x = 114,570.15

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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.