Home / 79,542.40-119,310.85-20,378.65

Finding the Fourth Proportional to 79,542.40, 119,310.85 and 20,378.65

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Solution

The fourth proportional to 79,542.40, 119,310.85 and 20,378.65 is: 30,567.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,542.40 : 119,310.85 = 20,378.65 : x
  2. Step 2: Convert to fraction form
    79,542.40/119,310.85 = 20,378.65/x
  3. Step 3: Cross multiply
    79,542.40x = 119,310.85 × 20,378.65
  4. Step 4: Simplify right side
    79,542.40x = 2,431,394,053.35
  5. Step 5: Solve for x
    x = 2,431,394,053.35/79,542.40
  6. Step 6: Final answer
    x = 30,567.27

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1.5x scale

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.