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Finding the Fourth Proportional to 80,704.80, 121,076.68 and 25,300.80

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Solution

The fourth proportional to 80,704.80, 121,076.68 and 25,300.80 is: 37,957.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,704.80 : 121,076.68 = 25,300.80 : x
  2. Step 2: Convert to fraction form
    80,704.80/121,076.68 = 25,300.80/x
  3. Step 3: Cross multiply
    80,704.80x = 121,076.68 × 25,300.80
  4. Step 4: Simplify right side
    80,704.80x = 3,063,336,865.34
  5. Step 5: Solve for x
    x = 3,063,336,865.34/80,704.80
  6. Step 6: Final answer
    x = 37,957.31

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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.