Home / 76,660.20-114,982.21-20,505.98

Finding the Fourth Proportional to 76,660.20, 114,982.21 and 20,505.98

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Solution

The fourth proportional to 76,660.20, 114,982.21 and 20,505.98 is: 30,756.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,660.20 : 114,982.21 = 20,505.98 : x
  2. Step 2: Convert to fraction form
    76,660.20/114,982.21 = 20,505.98/x
  3. Step 3: Cross multiply
    76,660.20x = 114,982.21 × 20,505.98
  4. Step 4: Simplify right side
    76,660.20x = 2,357,822,374.97
  5. Step 5: Solve for x
    x = 2,357,822,374.97/76,660.20
  6. Step 6: Final answer
    x = 30,756.80

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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.