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Finding the Fourth Proportional to 80,312.88, 120,471.26 and 27,005.55

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Solution

The fourth proportional to 80,312.88, 120,471.26 and 27,005.55 is: 40,508.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,312.88 : 120,471.26 = 27,005.55 : x
  2. Step 2: Convert to fraction form
    80,312.88/120,471.26 = 27,005.55/x
  3. Step 3: Cross multiply
    80,312.88x = 120,471.26 × 27,005.55
  4. Step 4: Simplify right side
    80,312.88x = 3,253,392,500.47
  5. Step 5: Solve for x
    x = 3,253,392,500.47/80,312.88
  6. Step 6: Final answer
    x = 40,508.98

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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.