Home / 78,790.46-108,739.87-43,868.61

Finding the Fourth Proportional to 78,790.46, 108,739.87 and 43,868.61

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Solution

The fourth proportional to 78,790.46, 108,739.87 and 43,868.61 is: 60,543.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,790.46 : 108,739.87 = 43,868.61 : x
  2. Step 2: Convert to fraction form
    78,790.46/108,739.87 = 43,868.61/x
  3. Step 3: Cross multiply
    78,790.46x = 108,739.87 × 43,868.61
  4. Step 4: Simplify right side
    78,790.46x = 4,770,266,838.81
  5. Step 5: Solve for x
    x = 4,770,266,838.81/78,790.46
  6. Step 6: Final answer
    x = 60,543.71

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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.