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Finding the Fourth Proportional to 69,435.54, 104,153.30 and 19,513.62

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Solution

The fourth proportional to 69,435.54, 104,153.30 and 19,513.62 is: 29,270.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,435.54 : 104,153.30 = 19,513.62 : x
  2. Step 2: Convert to fraction form
    69,435.54/104,153.30 = 19,513.62/x
  3. Step 3: Cross multiply
    69,435.54x = 104,153.30 × 19,513.62
  4. Step 4: Simplify right side
    69,435.54x = 2,032,407,917.95
  5. Step 5: Solve for x
    x = 2,032,407,917.95/69,435.54
  6. Step 6: Final answer
    x = 29,270.43

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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.