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Finding the Fourth Proportional to 89,169.98, 133,812.94 and 38,618.39

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Solution

The fourth proportional to 89,169.98, 133,812.94 and 38,618.39 is: 57,952.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,169.98 : 133,812.94 = 38,618.39 : x
  2. Step 2: Convert to fraction form
    89,169.98/133,812.94 = 38,618.39/x
  3. Step 3: Cross multiply
    89,169.98x = 133,812.94 × 38,618.39
  4. Step 4: Simplify right side
    89,169.98x = 5,167,640,303.97
  5. Step 5: Solve for x
    x = 5,167,640,303.97/89,169.98
  6. Step 6: Final answer
    x = 57,952.69

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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.