Home / 80,874.15-121,219.20-49,214.39

Finding the Fourth Proportional to 80,874.15, 121,219.20 and 49,214.39

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Solution

The fourth proportional to 80,874.15, 121,219.20 and 49,214.39 is: 73,765.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,874.15 : 121,219.20 = 49,214.39 : x
  2. Step 2: Convert to fraction form
    80,874.15/121,219.20 = 49,214.39/x
  3. Step 3: Cross multiply
    80,874.15x = 121,219.20 × 49,214.39
  4. Step 4: Simplify right side
    80,874.15x = 5,965,728,378.19
  5. Step 5: Solve for x
    x = 5,965,728,378.19/80,874.15
  6. Step 6: Final answer
    x = 73,765.58

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1.5x scale

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.