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Finding the Fourth Proportional to 79,903.86, 119,909.30 and 33,156.78

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Solution

The fourth proportional to 79,903.86, 119,909.30 and 33,156.78 is: 49,757.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,903.86 : 119,909.30 = 33,156.78 : x
  2. Step 2: Convert to fraction form
    79,903.86/119,909.30 = 33,156.78/x
  3. Step 3: Cross multiply
    79,903.86x = 119,909.30 × 33,156.78
  4. Step 4: Simplify right side
    79,903.86x = 3,975,806,114.27
  5. Step 5: Solve for x
    x = 3,975,806,114.27/79,903.86
  6. Step 6: Final answer
    x = 49,757.37

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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.