Home / 75,621.44-113,432.16-20,216

Finding the Fourth Proportional to 75,621.44, 113,432.16 and 20,216

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Solution

The fourth proportional to 75,621.44, 113,432.16 and 20,216 is: 30,324

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,621.44 : 113,432.16 = 20,216 : x
  2. Step 2: Convert to fraction form
    75,621.44/113,432.16 = 20,216/x
  3. Step 3: Cross multiply
    75,621.44x = 113,432.16 × 20,216
  4. Step 4: Simplify right side
    75,621.44x = 2,293,144,546.56
  5. Step 5: Solve for x
    x = 2,293,144,546.56/75,621.44
  6. Step 6: Final answer
    x = 30,324

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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.