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Finding the Fourth Proportional to 70,379.78, 105,304.82 and 49,360.86

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Solution

The fourth proportional to 70,379.78, 105,304.82 and 49,360.86 is: 73,855.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,379.78 : 105,304.82 = 49,360.86 : x
  2. Step 2: Convert to fraction form
    70,379.78/105,304.82 = 49,360.86/x
  3. Step 3: Cross multiply
    70,379.78x = 105,304.82 × 49,360.86
  4. Step 4: Simplify right side
    70,379.78x = 5,197,936,230.54
  5. Step 5: Solve for x
    x = 5,197,936,230.54/70,379.78
  6. Step 6: Final answer
    x = 73,855.54

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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.