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Finding the Fourth Proportional to 64,843.19, 89,481.80 and 36,163.71

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Solution

The fourth proportional to 64,843.19, 89,481.80 and 36,163.71 is: 49,904.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,843.19 : 89,481.80 = 36,163.71 : x
  2. Step 2: Convert to fraction form
    64,843.19/89,481.80 = 36,163.71/x
  3. Step 3: Cross multiply
    64,843.19x = 89,481.80 × 36,163.71
  4. Step 4: Simplify right side
    64,843.19x = 3,235,993,684.66
  5. Step 5: Solve for x
    x = 3,235,993,684.66/64,843.19
  6. Step 6: Final answer
    x = 49,904.92

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1.5x scale

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.