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Finding the Fourth Proportional to 64,035.81, 96,121.35 and 35,979.84

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Solution

The fourth proportional to 64,035.81, 96,121.35 and 35,979.84 is: 54,007.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,035.81 : 96,121.35 = 35,979.84 : x
  2. Step 2: Convert to fraction form
    64,035.81/96,121.35 = 35,979.84/x
  3. Step 3: Cross multiply
    64,035.81x = 96,121.35 × 35,979.84
  4. Step 4: Simplify right side
    64,035.81x = 3,458,430,793.58
  5. Step 5: Solve for x
    x = 3,458,430,793.58/64,035.81
  6. Step 6: Final answer
    x = 54,007.76

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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.