Home / 79,511.20-119,266.80-51,517.60

Finding the Fourth Proportional to 79,511.20, 119,266.80 and 51,517.60

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Solution

The fourth proportional to 79,511.20, 119,266.80 and 51,517.60 is: 77,276.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,511.20 : 119,266.80 = 51,517.60 : x
  2. Step 2: Convert to fraction form
    79,511.20/119,266.80 = 51,517.60/x
  3. Step 3: Cross multiply
    79,511.20x = 119,266.80 × 51,517.60
  4. Step 4: Simplify right side
    79,511.20x = 6,144,339,295.68
  5. Step 5: Solve for x
    x = 6,144,339,295.68/79,511.20
  6. Step 6: Final answer
    x = 77,276.40

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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.