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Finding the Fourth Proportional to 69,783.18, 104,659.05 and 19,862.17

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Solution

The fourth proportional to 69,783.18, 104,659.05 and 19,862.17 is: 29,788.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,783.18 : 104,659.05 = 19,862.17 : x
  2. Step 2: Convert to fraction form
    69,783.18/104,659.05 = 19,862.17/x
  3. Step 3: Cross multiply
    69,783.18x = 104,659.05 × 19,862.17
  4. Step 4: Simplify right side
    69,783.18x = 2,078,755,488.39
  5. Step 5: Solve for x
    x = 2,078,755,488.39/69,783.18
  6. Step 6: Final answer
    x = 29,788.78

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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.