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Finding the Fourth Proportional to 68,998.65, 103,464.25 and 28,464.62

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Solution

The fourth proportional to 68,998.65, 103,464.25 and 28,464.62 is: 42,683.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,998.65 : 103,464.25 = 28,464.62 : x
  2. Step 2: Convert to fraction form
    68,998.65/103,464.25 = 28,464.62/x
  3. Step 3: Cross multiply
    68,998.65x = 103,464.25 × 28,464.62
  4. Step 4: Simplify right side
    68,998.65x = 2,945,070,559.84
  5. Step 5: Solve for x
    x = 2,945,070,559.84/68,998.65
  6. Step 6: Final answer
    x = 42,683.02

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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.