Home / 79,790.41-119,689.72-20,626.59

Finding the Fourth Proportional to 79,790.41, 119,689.72 and 20,626.59

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Solution

The fourth proportional to 79,790.41, 119,689.72 and 20,626.59 is: 30,940.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,790.41 : 119,689.72 = 20,626.59 : x
  2. Step 2: Convert to fraction form
    79,790.41/119,689.72 = 20,626.59/x
  3. Step 3: Cross multiply
    79,790.41x = 119,689.72 × 20,626.59
  4. Step 4: Simplify right side
    79,790.41x = 2,468,791,178.92
  5. Step 5: Solve for x
    x = 2,468,791,178.92/79,790.41
  6. Step 6: Final answer
    x = 30,940.95

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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.