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Finding the Fourth Proportional to 68,709, 94,818.43 and 38,901

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Solution

The fourth proportional to 68,709, 94,818.43 and 38,901 is: 53,683.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,709 : 94,818.43 = 38,901 : x
  2. Step 2: Convert to fraction form
    68,709/94,818.43 = 38,901/x
  3. Step 3: Cross multiply
    68,709x = 94,818.43 × 38,901
  4. Step 4: Simplify right side
    68,709x = 3,688,531,745.43
  5. Step 5: Solve for x
    x = 3,688,531,745.43/68,709
  6. Step 6: Final answer
    x = 53,683.39

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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.