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Finding the Fourth Proportional to 68,936.91, 103,260.06 and 31,528.49

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Solution

The fourth proportional to 68,936.91, 103,260.06 and 31,528.49 is: 47,226.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,936.91 : 103,260.06 = 31,528.49 : x
  2. Step 2: Convert to fraction form
    68,936.91/103,260.06 = 31,528.49/x
  3. Step 3: Cross multiply
    68,936.91x = 103,260.06 × 31,528.49
  4. Step 4: Simplify right side
    68,936.91x = 3,255,633,252.81
  5. Step 5: Solve for x
    x = 3,255,633,252.81/68,936.91
  6. Step 6: Final answer
    x = 47,226.27

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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.