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Finding the Fourth Proportional to 80,311.72, 120,444.16 and 26,997.68

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Solution

The fourth proportional to 80,311.72, 120,444.16 and 26,997.68 is: 40,488.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,311.72 : 120,444.16 = 26,997.68 : x
  2. Step 2: Convert to fraction form
    80,311.72/120,444.16 = 26,997.68/x
  3. Step 3: Cross multiply
    80,311.72x = 120,444.16 × 26,997.68
  4. Step 4: Simplify right side
    80,311.72x = 3,251,712,152.34
  5. Step 5: Solve for x
    x = 3,251,712,152.34/80,311.72
  6. Step 6: Final answer
    x = 40,488.64

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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.