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Finding the Fourth Proportional to 68,018.10, 102,037.71 and 34,720.15

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Solution

The fourth proportional to 68,018.10, 102,037.71 and 34,720.15 is: 52,085.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,018.10 : 102,037.71 = 34,720.15 : x
  2. Step 2: Convert to fraction form
    68,018.10/102,037.71 = 34,720.15/x
  3. Step 3: Cross multiply
    68,018.10x = 102,037.71 × 34,720.15
  4. Step 4: Simplify right side
    68,018.10x = 3,542,764,086.67
  5. Step 5: Solve for x
    x = 3,542,764,086.67/68,018.10
  6. Step 6: Final answer
    x = 52,085.61

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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.