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Finding the Fourth Proportional to 68,156.31, 102,255.31 and 34,899.90

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Solution

The fourth proportional to 68,156.31, 102,255.31 and 34,899.90 is: 52,360.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,156.31 : 102,255.31 = 34,899.90 : x
  2. Step 2: Convert to fraction form
    68,156.31/102,255.31 = 34,899.90/x
  3. Step 3: Cross multiply
    68,156.31x = 102,255.31 × 34,899.90
  4. Step 4: Simplify right side
    68,156.31x = 3,568,700,093.47
  5. Step 5: Solve for x
    x = 3,568,700,093.47/68,156.31
  6. Step 6: Final answer
    x = 52,360.53

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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.