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Finding the Fourth Proportional to 79,363.20, 119,059.20 and 39,820.80

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Solution

The fourth proportional to 79,363.20, 119,059.20 and 39,820.80 is: 59,738.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,363.20 : 119,059.20 = 39,820.80 : x
  2. Step 2: Convert to fraction form
    79,363.20/119,059.20 = 39,820.80/x
  3. Step 3: Cross multiply
    79,363.20x = 119,059.20 × 39,820.80
  4. Step 4: Simplify right side
    79,363.20x = 4,741,032,591.36
  5. Step 5: Solve for x
    x = 4,741,032,591.36/79,363.20
  6. Step 6: Final answer
    x = 59,738.43

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1.5x scale

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.