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Finding the Fourth Proportional to 79,511.20, 119,266.80 and 35,120.80

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Solution

The fourth proportional to 79,511.20, 119,266.80 and 35,120.80 is: 52,681.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,511.20 : 119,266.80 = 35,120.80 : x
  2. Step 2: Convert to fraction form
    79,511.20/119,266.80 = 35,120.80/x
  3. Step 3: Cross multiply
    79,511.20x = 119,266.80 × 35,120.80
  4. Step 4: Simplify right side
    79,511.20x = 4,188,745,429.44
  5. Step 5: Solve for x
    x = 4,188,745,429.44/79,511.20
  6. Step 6: Final answer
    x = 52,681.20

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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.