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Finding the Fourth Proportional to 80,286.40, 120,444.48 and 35,914.88

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Solution

The fourth proportional to 80,286.40, 120,444.48 and 35,914.88 is: 53,878.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,286.40 : 120,444.48 = 35,914.88 : x
  2. Step 2: Convert to fraction form
    80,286.40/120,444.48 = 35,914.88/x
  3. Step 3: Cross multiply
    80,286.40x = 120,444.48 × 35,914.88
  4. Step 4: Simplify right side
    80,286.40x = 4,325,749,045.86
  5. Step 5: Solve for x
    x = 4,325,749,045.86/80,286.40
  6. Step 6: Final answer
    x = 53,878.98

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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.