Home / 68,731.34-103,096.94-18,811.85

Finding the Fourth Proportional to 68,731.34, 103,096.94 and 18,811.85

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Solution

The fourth proportional to 68,731.34, 103,096.94 and 18,811.85 is: 28,217.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,731.34 : 103,096.94 = 18,811.85 : x
  2. Step 2: Convert to fraction form
    68,731.34/103,096.94 = 18,811.85/x
  3. Step 3: Cross multiply
    68,731.34x = 103,096.94 × 18,811.85
  4. Step 4: Simplify right side
    68,731.34x = 1,939,443,561.20
  5. Step 5: Solve for x
    x = 1,939,443,561.20/68,731.34
  6. Step 6: Final answer
    x = 28,217.75

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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.