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Finding the Fourth Proportional to 69,994.32, 104,872.68 and 42,234

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Solution

The fourth proportional to 69,994.32, 104,872.68 and 42,234 is: 63,279.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,994.32 : 104,872.68 = 42,234 : x
  2. Step 2: Convert to fraction form
    69,994.32/104,872.68 = 42,234/x
  3. Step 3: Cross multiply
    69,994.32x = 104,872.68 × 42,234
  4. Step 4: Simplify right side
    69,994.32x = 4,429,192,767.12
  5. Step 5: Solve for x
    x = 4,429,192,767.12/69,994.32
  6. Step 6: Final answer
    x = 63,279.32

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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.