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Finding the Fourth Proportional to 68,939.92, 103,410.32 and 37,758.16

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Solution

The fourth proportional to 68,939.92, 103,410.32 and 37,758.16 is: 56,637.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,939.92 : 103,410.32 = 37,758.16 : x
  2. Step 2: Convert to fraction form
    68,939.92/103,410.32 = 37,758.16/x
  3. Step 3: Cross multiply
    68,939.92x = 103,410.32 × 37,758.16
  4. Step 4: Simplify right side
    68,939.92x = 3,904,583,408.21
  5. Step 5: Solve for x
    x = 3,904,583,408.21/68,939.92
  6. Step 6: Final answer
    x = 56,637.48

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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.