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Finding the Fourth Proportional to 101,910.50, 152,809.62 and 54,581.06

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Solution

The fourth proportional to 101,910.50, 152,809.62 and 54,581.06 is: 81,841.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,910.50 : 152,809.62 = 54,581.06 : x
  2. Step 2: Convert to fraction form
    101,910.50/152,809.62 = 54,581.06/x
  3. Step 3: Cross multiply
    101,910.50x = 152,809.62 × 54,581.06
  4. Step 4: Simplify right side
    101,910.50x = 8,340,511,037.80
  5. Step 5: Solve for x
    x = 8,340,511,037.80/101,910.50
  6. Step 6: Final answer
    x = 81,841.53

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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.