Home / 87,288.32-120,469.12-53,289.68

Finding the Fourth Proportional to 87,288.32, 120,469.12 and 53,289.68

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Solution

The fourth proportional to 87,288.32, 120,469.12 and 53,289.68 is: 73,546.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,288.32 : 120,469.12 = 53,289.68 : x
  2. Step 2: Convert to fraction form
    87,288.32/120,469.12 = 53,289.68/x
  3. Step 3: Cross multiply
    87,288.32x = 120,469.12 × 53,289.68
  4. Step 4: Simplify right side
    87,288.32x = 6,419,760,854.68
  5. Step 5: Solve for x
    x = 6,419,760,854.68/87,288.32
  6. Step 6: Final answer
    x = 73,546.62

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1.5x scale

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.