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Finding the Fourth Proportional to 69,196.80, 103,780.80 and 29,755.20

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Solution

The fourth proportional to 69,196.80, 103,780.80 and 29,755.20 is: 44,626.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,196.80 : 103,780.80 = 29,755.20 : x
  2. Step 2: Convert to fraction form
    69,196.80/103,780.80 = 29,755.20/x
  3. Step 3: Cross multiply
    69,196.80x = 103,780.80 × 29,755.20
  4. Step 4: Simplify right side
    69,196.80x = 3,088,018,460.16
  5. Step 5: Solve for x
    x = 3,088,018,460.16/69,196.80
  6. Step 6: Final answer
    x = 44,626.61

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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.