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Finding the Fourth Proportional to 69,093.30, 103,640.22 and 19,177.32

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Solution

The fourth proportional to 69,093.30, 103,640.22 and 19,177.32 is: 28,766.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,093.30 : 103,640.22 = 19,177.32 : x
  2. Step 2: Convert to fraction form
    69,093.30/103,640.22 = 19,177.32/x
  3. Step 3: Cross multiply
    69,093.30x = 103,640.22 × 19,177.32
  4. Step 4: Simplify right side
    69,093.30x = 1,987,541,663.81
  5. Step 5: Solve for x
    x = 1,987,541,663.81/69,093.30
  6. Step 6: Final answer
    x = 28,766.05

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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.