Home / 80,743.20-111,310.14-56,795.55

Finding the Fourth Proportional to 80,743.20, 111,310.14 and 56,795.55

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Solution

The fourth proportional to 80,743.20, 111,310.14 and 56,795.55 is: 78,296.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,743.20 : 111,310.14 = 56,795.55 : x
  2. Step 2: Convert to fraction form
    80,743.20/111,310.14 = 56,795.55/x
  3. Step 3: Cross multiply
    80,743.20x = 111,310.14 × 56,795.55
  4. Step 4: Simplify right side
    80,743.20x = 6,321,920,621.88
  5. Step 5: Solve for x
    x = 6,321,920,621.88/80,743.20
  6. Step 6: Final answer
    x = 78,296.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.