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Finding the Fourth Proportional to 68,398.56, 102,573.28 and 28,958.48

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Solution

The fourth proportional to 68,398.56, 102,573.28 and 28,958.48 is: 43,427.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,398.56 : 102,573.28 = 28,958.48 : x
  2. Step 2: Convert to fraction form
    68,398.56/102,573.28 = 28,958.48/x
  3. Step 3: Cross multiply
    68,398.56x = 102,573.28 × 28,958.48
  4. Step 4: Simplify right side
    68,398.56x = 2,970,366,277.41
  5. Step 5: Solve for x
    x = 2,970,366,277.41/68,398.56
  6. Step 6: Final answer
    x = 43,427.32

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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.