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Finding the Fourth Proportional to 89,990.96, 134,988.60 and 27,662

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Solution

The fourth proportional to 89,990.96, 134,988.60 and 27,662 is: 41,493.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,990.96 : 134,988.60 = 27,662 : x
  2. Step 2: Convert to fraction form
    89,990.96/134,988.60 = 27,662/x
  3. Step 3: Cross multiply
    89,990.96x = 134,988.60 × 27,662
  4. Step 4: Simplify right side
    89,990.96x = 3,734,054,653.20
  5. Step 5: Solve for x
    x = 3,734,054,653.20/89,990.96
  6. Step 6: Final answer
    x = 41,493.66

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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.