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Finding the Fourth Proportional to 57,634.71, 86,472.41 and 20,205.21

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Solution

The fourth proportional to 57,634.71, 86,472.41 and 20,205.21 is: 30,314.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,634.71 : 86,472.41 = 20,205.21 : x
  2. Step 2: Convert to fraction form
    57,634.71/86,472.41 = 20,205.21/x
  3. Step 3: Cross multiply
    57,634.71x = 86,472.41 × 20,205.21
  4. Step 4: Simplify right side
    57,634.71x = 1,747,193,102.23
  5. Step 5: Solve for x
    x = 1,747,193,102.23/57,634.71
  6. Step 6: Final answer
    x = 30,314.95

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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.