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Finding the Fourth Proportional to 80,367.48, 120,537.36 and 21,203.64

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Solution

The fourth proportional to 80,367.48, 120,537.36 and 21,203.64 is: 31,801.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,367.48 : 120,537.36 = 21,203.64 : x
  2. Step 2: Convert to fraction form
    80,367.48/120,537.36 = 21,203.64/x
  3. Step 3: Cross multiply
    80,367.48x = 120,537.36 × 21,203.64
  4. Step 4: Simplify right side
    80,367.48x = 2,555,830,787.99
  5. Step 5: Solve for x
    x = 2,555,830,787.99/80,367.48
  6. Step 6: Final answer
    x = 31,801.80

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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.