Home / 79,799.38-119,716.38-39,839.85

Finding the Fourth Proportional to 79,799.38, 119,716.38 and 39,839.85

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Solution

The fourth proportional to 79,799.38, 119,716.38 and 39,839.85 is: 59,768.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,799.38 : 119,716.38 = 39,839.85 : x
  2. Step 2: Convert to fraction form
    79,799.38/119,716.38 = 39,839.85/x
  3. Step 3: Cross multiply
    79,799.38x = 119,716.38 × 39,839.85
  4. Step 4: Simplify right side
    79,799.38x = 4,769,482,621.74
  5. Step 5: Solve for x
    x = 4,769,482,621.74/79,799.38
  6. Step 6: Final answer
    x = 59,768.42

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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.