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Finding the Fourth Proportional to 68,986.85, 103,393.74 and 29,497.61

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Solution

The fourth proportional to 68,986.85, 103,393.74 and 29,497.61 is: 44,209.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,986.85 : 103,393.74 = 29,497.61 : x
  2. Step 2: Convert to fraction form
    68,986.85/103,393.74 = 29,497.61/x
  3. Step 3: Cross multiply
    68,986.85x = 103,393.74 × 29,497.61
  4. Step 4: Simplify right side
    68,986.85x = 3,049,867,701.99
  5. Step 5: Solve for x
    x = 3,049,867,701.99/68,986.85
  6. Step 6: Final answer
    x = 44,209.41

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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.