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Finding the Fourth Proportional to 68,991.08, 103,393.08 and 31,504.76

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Solution

The fourth proportional to 68,991.08, 103,393.08 and 31,504.76 is: 47,214.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,991.08 : 103,393.08 = 31,504.76 : x
  2. Step 2: Convert to fraction form
    68,991.08/103,393.08 = 31,504.76/x
  3. Step 3: Cross multiply
    68,991.08x = 103,393.08 × 31,504.76
  4. Step 4: Simplify right side
    68,991.08x = 3,257,374,171.06
  5. Step 5: Solve for x
    x = 3,257,374,171.06/68,991.08
  6. Step 6: Final answer
    x = 47,214.42

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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.