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Finding the Fourth Proportional to 89,394.72, 134,083.86 and 30,230.90

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Solution

The fourth proportional to 89,394.72, 134,083.86 and 30,230.90 is: 45,343.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,394.72 : 134,083.86 = 30,230.90 : x
  2. Step 2: Convert to fraction form
    89,394.72/134,083.86 = 30,230.90/x
  3. Step 3: Cross multiply
    89,394.72x = 134,083.86 × 30,230.90
  4. Step 4: Simplify right side
    89,394.72x = 4,053,475,763.27
  5. Step 5: Solve for x
    x = 4,053,475,763.27/89,394.72
  6. Step 6: Final answer
    x = 45,343.57

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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.