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Finding the Fourth Proportional to 76,793.19, 115,182 and 20,625.99

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Solution

The fourth proportional to 76,793.19, 115,182 and 20,625.99 is: 30,936.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,793.19 : 115,182 = 20,625.99 : x
  2. Step 2: Convert to fraction form
    76,793.19/115,182 = 20,625.99/x
  3. Step 3: Cross multiply
    76,793.19x = 115,182 × 20,625.99
  4. Step 4: Simplify right side
    76,793.19x = 2,375,742,780.18
  5. Step 5: Solve for x
    x = 2,375,742,780.18/76,793.19
  6. Step 6: Final answer
    x = 30,936.89

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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.