Home / 72,919.25-109,379.33-20,329.19

Finding the Fourth Proportional to 72,919.25, 109,379.33 and 20,329.19

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Solution

The fourth proportional to 72,919.25, 109,379.33 and 20,329.19 is: 30,493.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,919.25 : 109,379.33 = 20,329.19 : x
  2. Step 2: Convert to fraction form
    72,919.25/109,379.33 = 20,329.19/x
  3. Step 3: Cross multiply
    72,919.25x = 109,379.33 × 20,329.19
  4. Step 4: Simplify right side
    72,919.25x = 2,223,593,181.64
  5. Step 5: Solve for x
    x = 2,223,593,181.64/72,919.25
  6. Step 6: Final answer
    x = 30,493.91

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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.