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Finding the Fourth Proportional to 68,494.68, 102,811.84 and 36,903.40

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Solution

The fourth proportional to 68,494.68, 102,811.84 and 36,903.40 is: 55,392.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,494.68 : 102,811.84 = 36,903.40 : x
  2. Step 2: Convert to fraction form
    68,494.68/102,811.84 = 36,903.40/x
  3. Step 3: Cross multiply
    68,494.68x = 102,811.84 × 36,903.40
  4. Step 4: Simplify right side
    68,494.68x = 3,794,106,456.26
  5. Step 5: Solve for x
    x = 3,794,106,456.26/68,494.68
  6. Step 6: Final answer
    x = 55,392.72

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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.