Home / 80,880.32-121,388.64-34,166.72

Finding the Fourth Proportional to 80,880.32, 121,388.64 and 34,166.72

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Solution

The fourth proportional to 80,880.32, 121,388.64 and 34,166.72 is: 51,278.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,880.32 : 121,388.64 = 34,166.72 : x
  2. Step 2: Convert to fraction form
    80,880.32/121,388.64 = 34,166.72/x
  3. Step 3: Cross multiply
    80,880.32x = 121,388.64 × 34,166.72
  4. Step 4: Simplify right side
    80,880.32x = 4,147,451,674.06
  5. Step 5: Solve for x
    x = 4,147,451,674.06/80,880.32
  6. Step 6: Final answer
    x = 51,278.87

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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.