Home / 80,750.64-121,132-21,584.96

Finding the Fourth Proportional to 80,750.64, 121,132 and 21,584.96

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Solution

The fourth proportional to 80,750.64, 121,132 and 21,584.96 is: 32,379.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,750.64 : 121,132 = 21,584.96 : x
  2. Step 2: Convert to fraction form
    80,750.64/121,132 = 21,584.96/x
  3. Step 3: Cross multiply
    80,750.64x = 121,132 × 21,584.96
  4. Step 4: Simplify right side
    80,750.64x = 2,614,629,374.72
  5. Step 5: Solve for x
    x = 2,614,629,374.72/80,750.64
  6. Step 6: Final answer
    x = 32,379.05

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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.