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Finding the Fourth Proportional to 89,930.79, 134,800.28 and 67,675.34

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Solution

The fourth proportional to 89,930.79, 134,800.28 and 67,675.34 is: 101,440.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,930.79 : 134,800.28 = 67,675.34 : x
  2. Step 2: Convert to fraction form
    89,930.79/134,800.28 = 67,675.34/x
  3. Step 3: Cross multiply
    89,930.79x = 134,800.28 × 67,675.34
  4. Step 4: Simplify right side
    89,930.79x = 9,122,653,768.72
  5. Step 5: Solve for x
    x = 9,122,653,768.72/89,930.79
  6. Step 6: Final answer
    x = 101,440.83

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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.