Home / 87,917.62-121,326.18-47,631.58

Finding the Fourth Proportional to 87,917.62, 121,326.18 and 47,631.58

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Solution

The fourth proportional to 87,917.62, 121,326.18 and 47,631.58 is: 65,731.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,917.62 : 121,326.18 = 47,631.58 : x
  2. Step 2: Convert to fraction form
    87,917.62/121,326.18 = 47,631.58/x
  3. Step 3: Cross multiply
    87,917.62x = 121,326.18 × 47,631.58
  4. Step 4: Simplify right side
    87,917.62x = 5,778,957,648.76
  5. Step 5: Solve for x
    x = 5,778,957,648.76/87,917.62
  6. Step 6: Final answer
    x = 65,731.51

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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.