Home / 79,436.98-119,155.39-20,272.65

Finding the Fourth Proportional to 79,436.98, 119,155.39 and 20,272.65

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Solution

The fourth proportional to 79,436.98, 119,155.39 and 20,272.65 is: 30,408.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,436.98 : 119,155.39 = 20,272.65 : x
  2. Step 2: Convert to fraction form
    79,436.98/119,155.39 = 20,272.65/x
  3. Step 3: Cross multiply
    79,436.98x = 119,155.39 × 20,272.65
  4. Step 4: Simplify right side
    79,436.98x = 2,415,595,019.57
  5. Step 5: Solve for x
    x = 2,415,595,019.57/79,436.98
  6. Step 6: Final answer
    x = 30,408.95

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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.