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Finding the Fourth Proportional to 87,857.34, 121,243.41 and 47,571.54

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Solution

The fourth proportional to 87,857.34, 121,243.41 and 47,571.54 is: 65,648.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,857.34 : 121,243.41 = 47,571.54 : x
  2. Step 2: Convert to fraction form
    87,857.34/121,243.41 = 47,571.54/x
  3. Step 3: Cross multiply
    87,857.34x = 121,243.41 × 47,571.54
  4. Step 4: Simplify right side
    87,857.34x = 5,767,735,728.55
  5. Step 5: Solve for x
    x = 5,767,735,728.55/87,857.34
  6. Step 6: Final answer
    x = 65,648.88

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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.