Home / 80,521.20-120,781.80-52,527.60

Finding the Fourth Proportional to 80,521.20, 120,781.80 and 52,527.60

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Solution

The fourth proportional to 80,521.20, 120,781.80 and 52,527.60 is: 78,791.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,521.20 : 120,781.80 = 52,527.60 : x
  2. Step 2: Convert to fraction form
    80,521.20/120,781.80 = 52,527.60/x
  3. Step 3: Cross multiply
    80,521.20x = 120,781.80 × 52,527.60
  4. Step 4: Simplify right side
    80,521.20x = 6,344,378,077.68
  5. Step 5: Solve for x
    x = 6,344,378,077.68/80,521.20
  6. Step 6: Final answer
    x = 78,791.40

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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.