Home / 87,310.48-120,485.24-53,375.80

Finding the Fourth Proportional to 87,310.48, 120,485.24 and 53,375.80

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Solution

The fourth proportional to 87,310.48, 120,485.24 and 53,375.80 is: 73,656.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,310.48 : 120,485.24 = 53,375.80 : x
  2. Step 2: Convert to fraction form
    87,310.48/120,485.24 = 53,375.80/x
  3. Step 3: Cross multiply
    87,310.48x = 120,485.24 × 53,375.80
  4. Step 4: Simplify right side
    87,310.48x = 6,430,996,073.19
  5. Step 5: Solve for x
    x = 6,430,996,073.19/87,310.48
  6. Step 6: Final answer
    x = 73,656.63

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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.