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Finding the Fourth Proportional to 79,144.80, 118,698 and 26,540.64

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Solution

The fourth proportional to 79,144.80, 118,698 and 26,540.64 is: 39,804.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,144.80 : 118,698 = 26,540.64 : x
  2. Step 2: Convert to fraction form
    79,144.80/118,698 = 26,540.64/x
  3. Step 3: Cross multiply
    79,144.80x = 118,698 × 26,540.64
  4. Step 4: Simplify right side
    79,144.80x = 3,150,320,886.72
  5. Step 5: Solve for x
    x = 3,150,320,886.72/79,144.80
  6. Step 6: Final answer
    x = 39,804.52

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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.