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Finding the Fourth Proportional to 68,286.60, 102,444.30 and 28,823.40

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Solution

The fourth proportional to 68,286.60, 102,444.30 and 28,823.40 is: 43,241.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,286.60 : 102,444.30 = 28,823.40 : x
  2. Step 2: Convert to fraction form
    68,286.60/102,444.30 = 28,823.40/x
  3. Step 3: Cross multiply
    68,286.60x = 102,444.30 × 28,823.40
  4. Step 4: Simplify right side
    68,286.60x = 2,952,793,036.62
  5. Step 5: Solve for x
    x = 2,952,793,036.62/68,286.60
  6. Step 6: Final answer
    x = 43,241.18

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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.