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Finding the Fourth Proportional to 68,599.31, 102,832.02 and 28,629.79

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Solution

The fourth proportional to 68,599.31, 102,832.02 and 28,629.79 is: 42,916.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,599.31 : 102,832.02 = 28,629.79 : x
  2. Step 2: Convert to fraction form
    68,599.31/102,832.02 = 28,629.79/x
  3. Step 3: Cross multiply
    68,599.31x = 102,832.02 × 28,629.79
  4. Step 4: Simplify right side
    68,599.31x = 2,944,058,880.80
  5. Step 5: Solve for x
    x = 2,944,058,880.80/68,599.31
  6. Step 6: Final answer
    x = 42,916.75

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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.