Home / 55,311.12-82,973.70-20,245.68

Finding the Fourth Proportional to 55,311.12, 82,973.70 and 20,245.68

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Solution

The fourth proportional to 55,311.12, 82,973.70 and 20,245.68 is: 30,371.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,311.12 : 82,973.70 = 20,245.68 : x
  2. Step 2: Convert to fraction form
    55,311.12/82,973.70 = 20,245.68/x
  3. Step 3: Cross multiply
    55,311.12x = 82,973.70 × 20,245.68
  4. Step 4: Simplify right side
    55,311.12x = 1,679,858,978.62
  5. Step 5: Solve for x
    x = 1,679,858,978.62/55,311.12
  6. Step 6: Final answer
    x = 30,371.09

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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.