Home / 87,739.92-121,080.72-47,453.72

Finding the Fourth Proportional to 87,739.92, 121,080.72 and 47,453.72

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Solution

The fourth proportional to 87,739.92, 121,080.72 and 47,453.72 is: 65,485.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,739.92 : 121,080.72 = 47,453.72 : x
  2. Step 2: Convert to fraction form
    87,739.92/121,080.72 = 47,453.72/x
  3. Step 3: Cross multiply
    87,739.92x = 121,080.72 × 47,453.72
  4. Step 4: Simplify right side
    87,739.92x = 5,745,730,584.28
  5. Step 5: Solve for x
    x = 5,745,730,584.28/87,739.92
  6. Step 6: Final answer
    x = 65,485.93

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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.