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Finding the Fourth Proportional to 79,186.80, 118,614.60 and 37,102.80

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Solution

The fourth proportional to 79,186.80, 118,614.60 and 37,102.80 is: 55,576.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,186.80 : 118,614.60 = 37,102.80 : x
  2. Step 2: Convert to fraction form
    79,186.80/118,614.60 = 37,102.80/x
  3. Step 3: Cross multiply
    79,186.80x = 118,614.60 × 37,102.80
  4. Step 4: Simplify right side
    79,186.80x = 4,400,933,780.88
  5. Step 5: Solve for x
    x = 4,400,933,780.88/79,186.80
  6. Step 6: Final answer
    x = 55,576.61

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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.