Home / 80,120.27-120,095.64-30,178.76

Finding the Fourth Proportional to 80,120.27, 120,095.64 and 30,178.76

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Solution

The fourth proportional to 80,120.27, 120,095.64 and 30,178.76 is: 45,236.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,120.27 : 120,095.64 = 30,178.76 : x
  2. Step 2: Convert to fraction form
    80,120.27/120,095.64 = 30,178.76/x
  3. Step 3: Cross multiply
    80,120.27x = 120,095.64 × 30,178.76
  4. Step 4: Simplify right side
    80,120.27x = 3,624,336,896.13
  5. Step 5: Solve for x
    x = 3,624,336,896.13/80,120.27
  6. Step 6: Final answer
    x = 45,236.21

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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.