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Finding the Fourth Proportional to 68,957.08, 103,435.64 and 19,035.52

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Solution

The fourth proportional to 68,957.08, 103,435.64 and 19,035.52 is: 28,553.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,957.08 : 103,435.64 = 19,035.52 : x
  2. Step 2: Convert to fraction form
    68,957.08/103,435.64 = 19,035.52/x
  3. Step 3: Cross multiply
    68,957.08x = 103,435.64 × 19,035.52
  4. Step 4: Simplify right side
    68,957.08x = 1,968,951,193.93
  5. Step 5: Solve for x
    x = 1,968,951,193.93/68,957.08
  6. Step 6: Final answer
    x = 28,553.29

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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.