Home / 281,618.10-422,423.51-68,387.76

Finding the Fourth Proportional to 281,618.10, 422,423.51 and 68,387.76

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Solution

The fourth proportional to 281,618.10, 422,423.51 and 68,387.76 is: 102,580.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,618.10 : 422,423.51 = 68,387.76 : x
  2. Step 2: Convert to fraction form
    281,618.10/422,423.51 = 68,387.76/x
  3. Step 3: Cross multiply
    281,618.10x = 422,423.51 × 68,387.76
  4. Step 4: Simplify right side
    281,618.10x = 28,888,597,278.30
  5. Step 5: Solve for x
    x = 28,888,597,278.30/281,618.10
  6. Step 6: Final answer
    x = 102,580.75

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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.