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Finding the Fourth Proportional to 69,911.92, 104,764.18 and 51,353.20

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Solution

The fourth proportional to 69,911.92, 104,764.18 and 51,353.20 is: 76,953.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,911.92 : 104,764.18 = 51,353.20 : x
  2. Step 2: Convert to fraction form
    69,911.92/104,764.18 = 51,353.20/x
  3. Step 3: Cross multiply
    69,911.92x = 104,764.18 × 51,353.20
  4. Step 4: Simplify right side
    69,911.92x = 5,379,975,888.38
  5. Step 5: Solve for x
    x = 5,379,975,888.38/69,911.92
  6. Step 6: Final answer
    x = 76,953.63

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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.