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Finding the Fourth Proportional to 68,730.60, 103,095.90 and 54,906.60

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Solution

The fourth proportional to 68,730.60, 103,095.90 and 54,906.60 is: 82,359.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,730.60 : 103,095.90 = 54,906.60 : x
  2. Step 2: Convert to fraction form
    68,730.60/103,095.90 = 54,906.60/x
  3. Step 3: Cross multiply
    68,730.60x = 103,095.90 × 54,906.60
  4. Step 4: Simplify right side
    68,730.60x = 5,660,645,342.94
  5. Step 5: Solve for x
    x = 5,660,645,342.94/68,730.60
  6. Step 6: Final answer
    x = 82,359.90

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1.5x scale

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.