Home / 87,286.32-120,466.36-53,287.68

Finding the Fourth Proportional to 87,286.32, 120,466.36 and 53,287.68

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Solution

The fourth proportional to 87,286.32, 120,466.36 and 53,287.68 is: 73,543.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,286.32 : 120,466.36 = 53,287.68 : x
  2. Step 2: Convert to fraction form
    87,286.32/120,466.36 = 53,287.68/x
  3. Step 3: Cross multiply
    87,286.32x = 120,466.36 × 53,287.68
  4. Step 4: Simplify right side
    87,286.32x = 6,419,372,842.44
  5. Step 5: Solve for x
    x = 6,419,372,842.44/87,286.32
  6. Step 6: Final answer
    x = 73,543.86

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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.