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Finding the Fourth Proportional to 69,411.92, 104,115.96 and 19,492.40

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Solution

The fourth proportional to 69,411.92, 104,115.96 and 19,492.40 is: 29,238.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,411.92 : 104,115.96 = 19,492.40 : x
  2. Step 2: Convert to fraction form
    69,411.92/104,115.96 = 19,492.40/x
  3. Step 3: Cross multiply
    69,411.92x = 104,115.96 × 19,492.40
  4. Step 4: Simplify right side
    69,411.92x = 2,029,469,938.70
  5. Step 5: Solve for x
    x = 2,029,469,938.70/69,411.92
  6. Step 6: Final answer
    x = 29,238.06

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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.