Home / 80,439.10-111,019.28-44,640.61

Finding the Fourth Proportional to 80,439.10, 111,019.28 and 44,640.61

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Solution

The fourth proportional to 80,439.10, 111,019.28 and 44,640.61 is: 61,611.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,439.10 : 111,019.28 = 44,640.61 : x
  2. Step 2: Convert to fraction form
    80,439.10/111,019.28 = 44,640.61/x
  3. Step 3: Cross multiply
    80,439.10x = 111,019.28 × 44,640.61
  4. Step 4: Simplify right side
    80,439.10x = 4,955,968,380.96
  5. Step 5: Solve for x
    x = 4,955,968,380.96/80,439.10
  6. Step 6: Final answer
    x = 61,611.43

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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.