Home / 80,983.60-121,509-36,579.76

Finding the Fourth Proportional to 80,983.60, 121,509 and 36,579.76

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Solution

The fourth proportional to 80,983.60, 121,509 and 36,579.76 is: 54,884.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,983.60 : 121,509 = 36,579.76 : x
  2. Step 2: Convert to fraction form
    80,983.60/121,509 = 36,579.76/x
  3. Step 3: Cross multiply
    80,983.60x = 121,509 × 36,579.76
  4. Step 4: Simplify right side
    80,983.60x = 4,444,770,057.84
  5. Step 5: Solve for x
    x = 4,444,770,057.84/80,983.60
  6. Step 6: Final answer
    x = 54,884.82

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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.