Home / 80,022.72-120,036-27,431.84

Finding the Fourth Proportional to 80,022.72, 120,036 and 27,431.84

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Solution

The fourth proportional to 80,022.72, 120,036 and 27,431.84 is: 41,148.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,022.72 : 120,036 = 27,431.84 : x
  2. Step 2: Convert to fraction form
    80,022.72/120,036 = 27,431.84/x
  3. Step 3: Cross multiply
    80,022.72x = 120,036 × 27,431.84
  4. Step 4: Simplify right side
    80,022.72x = 3,292,808,346.24
  5. Step 5: Solve for x
    x = 3,292,808,346.24/80,022.72
  6. Step 6: Final answer
    x = 41,148.42

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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.