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Finding the Fourth Proportional to 84,910.10, 127,361.10 and 28,744.70

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Solution

The fourth proportional to 84,910.10, 127,361.10 and 28,744.70 is: 43,115.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,910.10 : 127,361.10 = 28,744.70 : x
  2. Step 2: Convert to fraction form
    84,910.10/127,361.10 = 28,744.70/x
  3. Step 3: Cross multiply
    84,910.10x = 127,361.10 × 28,744.70
  4. Step 4: Simplify right side
    84,910.10x = 3,660,956,611.17
  5. Step 5: Solve for x
    x = 3,660,956,611.17/84,910.10
  6. Step 6: Final answer
    x = 43,115.68

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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.