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Finding the Fourth Proportional to 80,395.57, 120,611.58 and 27,805.51

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Solution

The fourth proportional to 80,395.57, 120,611.58 and 27,805.51 is: 41,714.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,395.57 : 120,611.58 = 27,805.51 : x
  2. Step 2: Convert to fraction form
    80,395.57/120,611.58 = 27,805.51/x
  3. Step 3: Cross multiply
    80,395.57x = 120,611.58 × 27,805.51
  4. Step 4: Simplify right side
    80,395.57x = 3,353,666,493.81
  5. Step 5: Solve for x
    x = 3,353,666,493.81/80,395.57
  6. Step 6: Final answer
    x = 41,714.57

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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.