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Finding the Fourth Proportional to 69,414.30, 104,121.45 and 61,832.70

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Solution

The fourth proportional to 69,414.30, 104,121.45 and 61,832.70 is: 92,749.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,414.30 : 104,121.45 = 61,832.70 : x
  2. Step 2: Convert to fraction form
    69,414.30/104,121.45 = 61,832.70/x
  3. Step 3: Cross multiply
    69,414.30x = 104,121.45 × 61,832.70
  4. Step 4: Simplify right side
    69,414.30x = 6,438,110,381.42
  5. Step 5: Solve for x
    x = 6,438,110,381.42/69,414.30
  6. Step 6: Final answer
    x = 92,749.05

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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.