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Finding the Fourth Proportional to 89,867.88, 134,760.11 and 52,438.73

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Solution

The fourth proportional to 89,867.88, 134,760.11 and 52,438.73 is: 78,633.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,867.88 : 134,760.11 = 52,438.73 : x
  2. Step 2: Convert to fraction form
    89,867.88/134,760.11 = 52,438.73/x
  3. Step 3: Cross multiply
    89,867.88x = 134,760.11 × 52,438.73
  4. Step 4: Simplify right side
    89,867.88x = 7,066,648,087.07
  5. Step 5: Solve for x
    x = 7,066,648,087.07/89,867.88
  6. Step 6: Final answer
    x = 78,633.75

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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.