Home / 80,725.20-111,400.16-44,428.72

Finding the Fourth Proportional to 80,725.20, 111,400.16 and 44,428.72

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Solution

The fourth proportional to 80,725.20, 111,400.16 and 44,428.72 is: 61,311.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,725.20 : 111,400.16 = 44,428.72 : x
  2. Step 2: Convert to fraction form
    80,725.20/111,400.16 = 44,428.72/x
  3. Step 3: Cross multiply
    80,725.20x = 111,400.16 × 44,428.72
  4. Step 4: Simplify right side
    80,725.20x = 4,949,366,516.60
  5. Step 5: Solve for x
    x = 4,949,366,516.60/80,725.20
  6. Step 6: Final answer
    x = 61,311.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.