Home / 53,380.80-80,078.40-18,331.20

Finding the Fourth Proportional to 53,380.80, 80,078.40 and 18,331.20

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Solution

The fourth proportional to 53,380.80, 80,078.40 and 18,331.20 is: 27,499.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,380.80 : 80,078.40 = 18,331.20 : x
  2. Step 2: Convert to fraction form
    53,380.80/80,078.40 = 18,331.20/x
  3. Step 3: Cross multiply
    53,380.80x = 80,078.40 × 18,331.20
  4. Step 4: Simplify right side
    53,380.80x = 1,467,933,166.08
  5. Step 5: Solve for x
    x = 1,467,933,166.08/53,380.80
  6. Step 6: Final answer
    x = 27,499.27

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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.