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Finding the Fourth Proportional to 68,930.88, 103,396.84 and 37,749.12

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Solution

The fourth proportional to 68,930.88, 103,396.84 and 37,749.12 is: 56,623.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,930.88 : 103,396.84 = 37,749.12 : x
  2. Step 2: Convert to fraction form
    68,930.88/103,396.84 = 37,749.12/x
  3. Step 3: Cross multiply
    68,930.88x = 103,396.84 × 37,749.12
  4. Step 4: Simplify right side
    68,930.88x = 3,903,139,720.78
  5. Step 5: Solve for x
    x = 3,903,139,720.78/68,930.88
  6. Step 6: Final answer
    x = 56,623.96

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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.