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Finding the Fourth Proportional to 69,286.70, 103,670.55 and 49,342.30

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Solution

The fourth proportional to 69,286.70, 103,670.55 and 49,342.30 is: 73,828.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,286.70 : 103,670.55 = 49,342.30 : x
  2. Step 2: Convert to fraction form
    69,286.70/103,670.55 = 49,342.30/x
  3. Step 3: Cross multiply
    69,286.70x = 103,670.55 × 49,342.30
  4. Step 4: Simplify right side
    69,286.70x = 5,115,343,379.27
  5. Step 5: Solve for x
    x = 5,115,343,379.27/69,286.70
  6. Step 6: Final answer
    x = 73,828.65

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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.