Home / 80,526.20-120,789.30-56,906.60

Finding the Fourth Proportional to 80,526.20, 120,789.30 and 56,906.60

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Solution

The fourth proportional to 80,526.20, 120,789.30 and 56,906.60 is: 85,359.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,526.20 : 120,789.30 = 56,906.60 : x
  2. Step 2: Convert to fraction form
    80,526.20/120,789.30 = 56,906.60/x
  3. Step 3: Cross multiply
    80,526.20x = 120,789.30 × 56,906.60
  4. Step 4: Simplify right side
    80,526.20x = 6,873,708,379.38
  5. Step 5: Solve for x
    x = 6,873,708,379.38/80,526.20
  6. Step 6: Final answer
    x = 85,359.90

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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.