Home / 79,789.52-119,683.92-20,620.16

Finding the Fourth Proportional to 79,789.52, 119,683.92 and 20,620.16

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Solution

The fourth proportional to 79,789.52, 119,683.92 and 20,620.16 is: 30,930.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,789.52 : 119,683.92 = 20,620.16 : x
  2. Step 2: Convert to fraction form
    79,789.52/119,683.92 = 20,620.16/x
  3. Step 3: Cross multiply
    79,789.52x = 119,683.92 × 20,620.16
  4. Step 4: Simplify right side
    79,789.52x = 2,467,901,579.83
  5. Step 5: Solve for x
    x = 2,467,901,579.83/79,789.52
  6. Step 6: Final answer
    x = 30,930.15

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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.