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Finding the Fourth Proportional to 68,176.32, 102,318.48 and 28,760.64

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Solution

The fourth proportional to 68,176.32, 102,318.48 and 28,760.64 is: 43,163.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,176.32 : 102,318.48 = 28,760.64 : x
  2. Step 2: Convert to fraction form
    68,176.32/102,318.48 = 28,760.64/x
  3. Step 3: Cross multiply
    68,176.32x = 102,318.48 × 28,760.64
  4. Step 4: Simplify right side
    68,176.32x = 2,942,744,968.63
  5. Step 5: Solve for x
    x = 2,942,744,968.63/68,176.32
  6. Step 6: Final answer
    x = 43,163.74

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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.