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Finding the Fourth Proportional to 68,827.20, 103,111.20 and 35,433.60

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Solution

The fourth proportional to 68,827.20, 103,111.20 and 35,433.60 is: 53,083.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,827.20 : 103,111.20 = 35,433.60 : x
  2. Step 2: Convert to fraction form
    68,827.20/103,111.20 = 35,433.60/x
  3. Step 3: Cross multiply
    68,827.20x = 103,111.20 × 35,433.60
  4. Step 4: Simplify right side
    68,827.20x = 3,653,601,016.32
  5. Step 5: Solve for x
    x = 3,653,601,016.32/68,827.20
  6. Step 6: Final answer
    x = 53,083.68

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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.