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Finding the Fourth Proportional to 67,640.87, 93,333.97 and 38,961.81

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Solution

The fourth proportional to 67,640.87, 93,333.97 and 38,961.81 is: 53,761.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,640.87 : 93,333.97 = 38,961.81 : x
  2. Step 2: Convert to fraction form
    67,640.87/93,333.97 = 38,961.81/x
  3. Step 3: Cross multiply
    67,640.87x = 93,333.97 × 38,961.81
  4. Step 4: Simplify right side
    67,640.87x = 3,636,460,454.39
  5. Step 5: Solve for x
    x = 3,636,460,454.39/67,640.87
  6. Step 6: Final answer
    x = 53,761.29

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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.