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Finding the Fourth Proportional to 69,809.40, 104,714.10 and 41,815.80

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Solution

The fourth proportional to 69,809.40, 104,714.10 and 41,815.80 is: 62,723.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,809.40 : 104,714.10 = 41,815.80 : x
  2. Step 2: Convert to fraction form
    69,809.40/104,714.10 = 41,815.80/x
  3. Step 3: Cross multiply
    69,809.40x = 104,714.10 × 41,815.80
  4. Step 4: Simplify right side
    69,809.40x = 4,378,703,862.78
  5. Step 5: Solve for x
    x = 4,378,703,862.78/69,809.40
  6. Step 6: Final answer
    x = 62,723.70

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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.