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Finding the Fourth Proportional to 36,398.80, 54,559.31 and 25,978.96

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Solution

The fourth proportional to 36,398.80, 54,559.31 and 25,978.96 is: 38,940.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,398.80 : 54,559.31 = 25,978.96 : x
  2. Step 2: Convert to fraction form
    36,398.80/54,559.31 = 25,978.96/x
  3. Step 3: Cross multiply
    36,398.80x = 54,559.31 × 25,978.96
  4. Step 4: Simplify right side
    36,398.80x = 1,417,393,859.32
  5. Step 5: Solve for x
    x = 1,417,393,859.32/36,398.80
  6. Step 6: Final answer
    x = 38,940.68

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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.