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Finding the Fourth Proportional to 89,207.97, 133,812 and 26,878.47

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Solution

The fourth proportional to 89,207.97, 133,812 and 26,878.47 is: 40,317.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,207.97 : 133,812 = 26,878.47 : x
  2. Step 2: Convert to fraction form
    89,207.97/133,812 = 26,878.47/x
  3. Step 3: Cross multiply
    89,207.97x = 133,812 × 26,878.47
  4. Step 4: Simplify right side
    89,207.97x = 3,596,661,325.85
  5. Step 5: Solve for x
    x = 3,596,661,325.85/89,207.97
  6. Step 6: Final answer
    x = 40,317.71

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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.