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Finding the Fourth Proportional to 68,895.63, 103,179.42 and 47,856.69

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Solution

The fourth proportional to 68,895.63, 103,179.42 and 47,856.69 is: 71,671.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,895.63 : 103,179.42 = 47,856.69 : x
  2. Step 2: Convert to fraction form
    68,895.63/103,179.42 = 47,856.69/x
  3. Step 3: Cross multiply
    68,895.63x = 103,179.42 × 47,856.69
  4. Step 4: Simplify right side
    68,895.63x = 4,937,825,517.32
  5. Step 5: Solve for x
    x = 4,937,825,517.32/68,895.63
  6. Step 6: Final answer
    x = 71,671.10

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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.