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Finding the Fourth Proportional to 68,398.38, 102,572.88 and 28,958.22

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Solution

The fourth proportional to 68,398.38, 102,572.88 and 28,958.22 is: 43,426.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,398.38 : 102,572.88 = 28,958.22 : x
  2. Step 2: Convert to fraction form
    68,398.38/102,572.88 = 28,958.22/x
  3. Step 3: Cross multiply
    68,398.38x = 102,572.88 × 28,958.22
  4. Step 4: Simplify right side
    68,398.38x = 2,970,328,025.07
  5. Step 5: Solve for x
    x = 2,970,328,025.07/68,398.38
  6. Step 6: Final answer
    x = 43,426.88

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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.