Home / 80,279.03-120,493.27-40,865.64

Finding the Fourth Proportional to 80,279.03, 120,493.27 and 40,865.64

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Solution

The fourth proportional to 80,279.03, 120,493.27 and 40,865.64 is: 61,336.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,279.03 : 120,493.27 = 40,865.64 : x
  2. Step 2: Convert to fraction form
    80,279.03/120,493.27 = 40,865.64/x
  3. Step 3: Cross multiply
    80,279.03x = 120,493.27 × 40,865.64
  4. Step 4: Simplify right side
    80,279.03x = 4,924,034,594.24
  5. Step 5: Solve for x
    x = 4,924,034,594.24/80,279.03
  6. Step 6: Final answer
    x = 61,336.50

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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.