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Finding the Fourth Proportional to 87,960, 121,392.48 and 48,223.68

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Solution

The fourth proportional to 87,960, 121,392.48 and 48,223.68 is: 66,552.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,960 : 121,392.48 = 48,223.68 : x
  2. Step 2: Convert to fraction form
    87,960/121,392.48 = 48,223.68/x
  3. Step 3: Cross multiply
    87,960x = 121,392.48 × 48,223.68
  4. Step 4: Simplify right side
    87,960x = 5,853,992,109.93
  5. Step 5: Solve for x
    x = 5,853,992,109.93/87,960
  6. Step 6: Final answer
    x = 66,552.89

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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.