Home / 78,928.22-108,923.08-47,115.57

Finding the Fourth Proportional to 78,928.22, 108,923.08 and 47,115.57

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Solution

The fourth proportional to 78,928.22, 108,923.08 and 47,115.57 is: 65,020.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,928.22 : 108,923.08 = 47,115.57 : x
  2. Step 2: Convert to fraction form
    78,928.22/108,923.08 = 47,115.57/x
  3. Step 3: Cross multiply
    78,928.22x = 108,923.08 × 47,115.57
  4. Step 4: Simplify right side
    78,928.22x = 5,131,973,379.37
  5. Step 5: Solve for x
    x = 5,131,973,379.37/78,928.22
  6. Step 6: Final answer
    x = 65,020.76

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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.