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Finding the Fourth Proportional to 80,751.64, 121,133.50 and 21,585.96

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Solution

The fourth proportional to 80,751.64, 121,133.50 and 21,585.96 is: 32,380.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,751.64 : 121,133.50 = 21,585.96 : x
  2. Step 2: Convert to fraction form
    80,751.64/121,133.50 = 21,585.96/x
  3. Step 3: Cross multiply
    80,751.64x = 121,133.50 × 21,585.96
  4. Step 4: Simplify right side
    80,751.64x = 2,614,782,885.66
  5. Step 5: Solve for x
    x = 2,614,782,885.66/80,751.64
  6. Step 6: Final answer
    x = 32,380.55

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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.