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Finding the Fourth Proportional to 68,390.92, 102,766.80 and 36,824.32

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Solution

The fourth proportional to 68,390.92, 102,766.80 and 36,824.32 is: 55,333.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,390.92 : 102,766.80 = 36,824.32 : x
  2. Step 2: Convert to fraction form
    68,390.92/102,766.80 = 36,824.32/x
  3. Step 3: Cross multiply
    68,390.92x = 102,766.80 × 36,824.32
  4. Step 4: Simplify right side
    68,390.92x = 3,784,317,528.58
  5. Step 5: Solve for x
    x = 3,784,317,528.58/68,390.92
  6. Step 6: Final answer
    x = 55,333.63

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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.