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Finding the Fourth Proportional to 67,037.44, 100,478.40 and 53,904.64

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Solution

The fourth proportional to 67,037.44, 100,478.40 and 53,904.64 is: 80,794.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,037.44 : 100,478.40 = 53,904.64 : x
  2. Step 2: Convert to fraction form
    67,037.44/100,478.40 = 53,904.64/x
  3. Step 3: Cross multiply
    67,037.44x = 100,478.40 × 53,904.64
  4. Step 4: Simplify right side
    67,037.44x = 5,416,251,979.78
  5. Step 5: Solve for x
    x = 5,416,251,979.78/67,037.44
  6. Step 6: Final answer
    x = 80,794.43

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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.