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Finding the Fourth Proportional to 79,169.68, 118,668.66 and 39,631.42

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Solution

The fourth proportional to 79,169.68, 118,668.66 and 39,631.42 is: 59,404.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,169.68 : 118,668.66 = 39,631.42 : x
  2. Step 2: Convert to fraction form
    79,169.68/118,668.66 = 39,631.42/x
  3. Step 3: Cross multiply
    79,169.68x = 118,668.66 × 39,631.42
  4. Step 4: Simplify right side
    79,169.68x = 4,703,007,505.30
  5. Step 5: Solve for x
    x = 4,703,007,505.30/79,169.68
  6. Step 6: Final answer
    x = 59,404.15

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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.