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Finding the Fourth Proportional to 68,775, 103,191.66 and 37,147.74

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Solution

The fourth proportional to 68,775, 103,191.66 and 37,147.74 is: 55,737.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,775 : 103,191.66 = 37,147.74 : x
  2. Step 2: Convert to fraction form
    68,775/103,191.66 = 37,147.74/x
  3. Step 3: Cross multiply
    68,775x = 103,191.66 × 37,147.74
  4. Step 4: Simplify right side
    68,775x = 3,833,336,955.85
  5. Step 5: Solve for x
    x = 3,833,336,955.85/68,775
  6. Step 6: Final answer
    x = 55,737.36

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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.