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Finding the Fourth Proportional to 97,639.75, 134,736.49 and 54,611.78

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Solution

The fourth proportional to 97,639.75, 134,736.49 and 54,611.78 is: 75,360.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,639.75 : 134,736.49 = 54,611.78 : x
  2. Step 2: Convert to fraction form
    97,639.75/134,736.49 = 54,611.78/x
  3. Step 3: Cross multiply
    97,639.75x = 134,736.49 × 54,611.78
  4. Step 4: Simplify right side
    97,639.75x = 7,358,200,081.27
  5. Step 5: Solve for x
    x = 7,358,200,081.27/97,639.75
  6. Step 6: Final answer
    x = 75,360.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.