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Finding the Fourth Proportional to 68,658.50, 94,750.17 and 38,850.50

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Solution

The fourth proportional to 68,658.50, 94,750.17 and 38,850.50 is: 53,614.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,658.50 : 94,750.17 = 38,850.50 : x
  2. Step 2: Convert to fraction form
    68,658.50/94,750.17 = 38,850.50/x
  3. Step 3: Cross multiply
    68,658.50x = 94,750.17 × 38,850.50
  4. Step 4: Simplify right side
    68,658.50x = 3,681,091,479.59
  5. Step 5: Solve for x
    x = 3,681,091,479.59/68,658.50
  6. Step 6: Final answer
    x = 53,614.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.