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Finding the Fourth Proportional to 83,571.57, 115,326.90 and 47,268.21

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Solution

The fourth proportional to 83,571.57, 115,326.90 and 47,268.21 is: 65,229.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,571.57 : 115,326.90 = 47,268.21 : x
  2. Step 2: Convert to fraction form
    83,571.57/115,326.90 = 47,268.21/x
  3. Step 3: Cross multiply
    83,571.57x = 115,326.90 × 47,268.21
  4. Step 4: Simplify right side
    83,571.57x = 5,451,296,127.85
  5. Step 5: Solve for x
    x = 5,451,296,127.85/83,571.57
  6. Step 6: Final answer
    x = 65,229.07

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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.