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Finding the Fourth Proportional to 69,112.59, 103,668.92 and 19,192.69

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Solution

The fourth proportional to 69,112.59, 103,668.92 and 19,192.69 is: 28,789.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,112.59 : 103,668.92 = 19,192.69 : x
  2. Step 2: Convert to fraction form
    69,112.59/103,668.92 = 19,192.69/x
  3. Step 3: Cross multiply
    69,112.59x = 103,668.92 × 19,192.69
  4. Step 4: Simplify right side
    69,112.59x = 1,989,685,233.00
  5. Step 5: Solve for x
    x = 1,989,685,233.00/69,112.59
  6. Step 6: Final answer
    x = 28,789.04

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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.