Home / 87,891.32-121,289.73-47,604.98

Finding the Fourth Proportional to 87,891.32, 121,289.73 and 47,604.98

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Solution

The fourth proportional to 87,891.32, 121,289.73 and 47,604.98 is: 65,694.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,891.32 : 121,289.73 = 47,604.98 : x
  2. Step 2: Convert to fraction form
    87,891.32/121,289.73 = 47,604.98/x
  3. Step 3: Cross multiply
    87,891.32x = 121,289.73 × 47,604.98
  4. Step 4: Simplify right side
    87,891.32x = 5,773,995,170.86
  5. Step 5: Solve for x
    x = 5,773,995,170.86/87,891.32
  6. Step 6: Final answer
    x = 65,694.71

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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.