Home / 78,891.44-118,311.60-26,286.80

Finding the Fourth Proportional to 78,891.44, 118,311.60 and 26,286.80

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Solution

The fourth proportional to 78,891.44, 118,311.60 and 26,286.80 is: 39,421.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,891.44 : 118,311.60 = 26,286.80 : x
  2. Step 2: Convert to fraction form
    78,891.44/118,311.60 = 26,286.80/x
  3. Step 3: Cross multiply
    78,891.44x = 118,311.60 × 26,286.80
  4. Step 4: Simplify right side
    78,891.44x = 3,110,033,366.88
  5. Step 5: Solve for x
    x = 3,110,033,366.88/78,891.44
  6. Step 6: Final answer
    x = 39,421.68

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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.