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Finding the Fourth Proportional to 56,179.99, 84,270.31 and 18,739.97

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Solution

The fourth proportional to 56,179.99, 84,270.31 and 18,739.97 is: 28,110.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,179.99 : 84,270.31 = 18,739.97 : x
  2. Step 2: Convert to fraction form
    56,179.99/84,270.31 = 18,739.97/x
  3. Step 3: Cross multiply
    56,179.99x = 84,270.31 × 18,739.97
  4. Step 4: Simplify right side
    56,179.99x = 1,579,222,659.94
  5. Step 5: Solve for x
    x = 1,579,222,659.94/56,179.99
  6. Step 6: Final answer
    x = 28,110.06

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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.