Home / 87,872.77-121,263.82-47,585.61

Finding the Fourth Proportional to 87,872.77, 121,263.82 and 47,585.61

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Solution

The fourth proportional to 87,872.77, 121,263.82 and 47,585.61 is: 65,667.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,872.77 : 121,263.82 = 47,585.61 : x
  2. Step 2: Convert to fraction form
    87,872.77/121,263.82 = 47,585.61/x
  3. Step 3: Cross multiply
    87,872.77x = 121,263.82 × 47,585.61
  4. Step 4: Simplify right side
    87,872.77x = 5,770,412,845.63
  5. Step 5: Solve for x
    x = 5,770,412,845.63/87,872.77
  6. Step 6: Final answer
    x = 65,667.82

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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.