Home / 281,621.76-422,428.99-68,391.42

Finding the Fourth Proportional to 281,621.76, 422,428.99 and 68,391.42

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Solution

The fourth proportional to 281,621.76, 422,428.99 and 68,391.42 is: 102,586.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,621.76 : 422,428.99 = 68,391.42 : x
  2. Step 2: Convert to fraction form
    281,621.76/422,428.99 = 68,391.42/x
  3. Step 3: Cross multiply
    281,621.76x = 422,428.99 × 68,391.42
  4. Step 4: Simplify right side
    281,621.76x = 28,890,516,720.18
  5. Step 5: Solve for x
    x = 28,890,516,720.18/281,621.76
  6. Step 6: Final answer
    x = 102,586.24

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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.