Home / 87,871.27-121,261.75-47,584.11

Finding the Fourth Proportional to 87,871.27, 121,261.75 and 47,584.11

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Solution

The fourth proportional to 87,871.27, 121,261.75 and 47,584.11 is: 65,665.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,871.27 : 121,261.75 = 47,584.11 : x
  2. Step 2: Convert to fraction form
    87,871.27/121,261.75 = 47,584.11/x
  3. Step 3: Cross multiply
    87,871.27x = 121,261.75 × 47,584.11
  4. Step 4: Simplify right side
    87,871.27x = 5,770,132,037.55
  5. Step 5: Solve for x
    x = 5,770,132,037.55/87,871.27
  6. Step 6: Final answer
    x = 65,665.74

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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.