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Finding the Fourth Proportional to 69,793.20, 104,689.80 and 43,221.15

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Solution

The fourth proportional to 69,793.20, 104,689.80 and 43,221.15 is: 64,831.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,793.20 : 104,689.80 = 43,221.15 : x
  2. Step 2: Convert to fraction form
    69,793.20/104,689.80 = 43,221.15/x
  3. Step 3: Cross multiply
    69,793.20x = 104,689.80 × 43,221.15
  4. Step 4: Simplify right side
    69,793.20x = 4,524,813,549.27
  5. Step 5: Solve for x
    x = 4,524,813,549.27/69,793.20
  6. Step 6: Final answer
    x = 64,831.73

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1.5x scale

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.