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Finding the Fourth Proportional to 69,053.73, 103,569.06 and 19,138.88

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Solution

The fourth proportional to 69,053.73, 103,569.06 and 19,138.88 is: 28,705.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,053.73 : 103,569.06 = 19,138.88 : x
  2. Step 2: Convert to fraction form
    69,053.73/103,569.06 = 19,138.88/x
  3. Step 3: Cross multiply
    69,053.73x = 103,569.06 × 19,138.88
  4. Step 4: Simplify right side
    69,053.73x = 1,982,195,293.21
  5. Step 5: Solve for x
    x = 1,982,195,293.21/69,053.73
  6. Step 6: Final answer
    x = 28,705.12

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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.