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Finding the Fourth Proportional to 80,993.73, 121,482.40 and 21,835.38

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Solution

The fourth proportional to 80,993.73, 121,482.40 and 21,835.38 is: 32,750.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,993.73 : 121,482.40 = 21,835.38 : x
  2. Step 2: Convert to fraction form
    80,993.73/121,482.40 = 21,835.38/x
  3. Step 3: Cross multiply
    80,993.73x = 121,482.40 × 21,835.38
  4. Step 4: Simplify right side
    80,993.73x = 2,652,614,778.52
  5. Step 5: Solve for x
    x = 2,652,614,778.52/80,993.73
  6. Step 6: Final answer
    x = 32,750.86

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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.