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Finding the Fourth Proportional to 89,168.82, 133,811.16 and 38,617.21

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Solution

The fourth proportional to 89,168.82, 133,811.16 and 38,617.21 is: 57,950.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,168.82 : 133,811.16 = 38,617.21 : x
  2. Step 2: Convert to fraction form
    89,168.82/133,811.16 = 38,617.21/x
  3. Step 3: Cross multiply
    89,168.82x = 133,811.16 × 38,617.21
  4. Step 4: Simplify right side
    89,168.82x = 5,167,413,666.06
  5. Step 5: Solve for x
    x = 5,167,413,666.06/89,168.82
  6. Step 6: Final answer
    x = 57,950.90

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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.