Home / 55,441.76-83,159.94-20,379.20

Finding the Fourth Proportional to 55,441.76, 83,159.94 and 20,379.20

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Solution

The fourth proportional to 55,441.76, 83,159.94 and 20,379.20 is: 30,567.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,441.76 : 83,159.94 = 20,379.20 : x
  2. Step 2: Convert to fraction form
    55,441.76/83,159.94 = 20,379.20/x
  3. Step 3: Cross multiply
    55,441.76x = 83,159.94 × 20,379.20
  4. Step 4: Simplify right side
    55,441.76x = 1,694,733,049.25
  5. Step 5: Solve for x
    x = 1,694,733,049.25/55,441.76
  6. Step 6: Final answer
    x = 30,567.81

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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.