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Finding the Fourth Proportional to 68,870.96, 103,280.52 and 54,252.08

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Solution

The fourth proportional to 68,870.96, 103,280.52 and 54,252.08 is: 81,357.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,870.96 : 103,280.52 = 54,252.08 : x
  2. Step 2: Convert to fraction form
    68,870.96/103,280.52 = 54,252.08/x
  3. Step 3: Cross multiply
    68,870.96x = 103,280.52 × 54,252.08
  4. Step 4: Simplify right side
    68,870.96x = 5,603,183,033.48
  5. Step 5: Solve for x
    x = 5,603,183,033.48/68,870.96
  6. Step 6: Final answer
    x = 81,357.70

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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.