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Finding the Fourth Proportional to 89,976.87, 134,951.47 and 30,006.40

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Solution

The fourth proportional to 89,976.87, 134,951.47 and 30,006.40 is: 45,004.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,976.87 : 134,951.47 = 30,006.40 : x
  2. Step 2: Convert to fraction form
    89,976.87/134,951.47 = 30,006.40/x
  3. Step 3: Cross multiply
    89,976.87x = 134,951.47 × 30,006.40
  4. Step 4: Simplify right side
    89,976.87x = 4,049,407,452.03
  5. Step 5: Solve for x
    x = 4,049,407,452.03/89,976.87
  6. Step 6: Final answer
    x = 45,004.98

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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.