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Finding the Fourth Proportional to 79,660.59, 119,564.81 and 40,245.39

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Solution

The fourth proportional to 79,660.59, 119,564.81 and 40,245.39 is: 60,405.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,660.59 : 119,564.81 = 40,245.39 : x
  2. Step 2: Convert to fraction form
    79,660.59/119,564.81 = 40,245.39/x
  3. Step 3: Cross multiply
    79,660.59x = 119,564.81 × 40,245.39
  4. Step 4: Simplify right side
    79,660.59x = 4,811,932,207.50
  5. Step 5: Solve for x
    x = 4,811,932,207.50/79,660.59
  6. Step 6: Final answer
    x = 60,405.43

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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.