Home / 87,995.20-131,992.80-53,003.20

Finding the Fourth Proportional to 87,995.20, 131,992.80 and 53,003.20

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Solution

The fourth proportional to 87,995.20, 131,992.80 and 53,003.20 is: 79,504.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,995.20 : 131,992.80 = 53,003.20 : x
  2. Step 2: Convert to fraction form
    87,995.20/131,992.80 = 53,003.20/x
  3. Step 3: Cross multiply
    87,995.20x = 131,992.80 × 53,003.20
  4. Step 4: Simplify right side
    87,995.20x = 6,996,040,776.96
  5. Step 5: Solve for x
    x = 6,996,040,776.96/87,995.20
  6. Step 6: Final answer
    x = 79,504.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.