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Finding the Fourth Proportional to 69,702.15, 104,553.11 and 19,782.73

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Solution

The fourth proportional to 69,702.15, 104,553.11 and 19,782.73 is: 29,674.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,702.15 : 104,553.11 = 19,782.73 : x
  2. Step 2: Convert to fraction form
    69,702.15/104,553.11 = 19,782.73/x
  3. Step 3: Cross multiply
    69,702.15x = 104,553.11 × 19,782.73
  4. Step 4: Simplify right side
    69,702.15x = 2,068,346,125.94
  5. Step 5: Solve for x
    x = 2,068,346,125.94/69,702.15
  6. Step 6: Final answer
    x = 29,674.06

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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.