Home / 71,986.64-107,979.96-36,903.92

Finding the Fourth Proportional to 71,986.64, 107,979.96 and 36,903.92

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Solution

The fourth proportional to 71,986.64, 107,979.96 and 36,903.92 is: 55,355.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,986.64 : 107,979.96 = 36,903.92 : x
  2. Step 2: Convert to fraction form
    71,986.64/107,979.96 = 36,903.92/x
  3. Step 3: Cross multiply
    71,986.64x = 107,979.96 × 36,903.92
  4. Step 4: Simplify right side
    71,986.64x = 3,984,883,265.54
  5. Step 5: Solve for x
    x = 3,984,883,265.54/71,986.64
  6. Step 6: Final answer
    x = 55,355.88

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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.