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Finding the Fourth Proportional to 68,973.28, 103,456.96 and 19,725.28

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Solution

The fourth proportional to 68,973.28, 103,456.96 and 19,725.28 is: 29,587.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,973.28 : 103,456.96 = 19,725.28 : x
  2. Step 2: Convert to fraction form
    68,973.28/103,456.96 = 19,725.28/x
  3. Step 3: Cross multiply
    68,973.28x = 103,456.96 × 19,725.28
  4. Step 4: Simplify right side
    68,973.28x = 2,040,717,503.95
  5. Step 5: Solve for x
    x = 2,040,717,503.95/68,973.28
  6. Step 6: Final answer
    x = 29,587.07

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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.