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Finding the Fourth Proportional to 53,175.80, 79,739.30 and 18,101.18

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Solution

The fourth proportional to 53,175.80, 79,739.30 and 18,101.18 is: 27,143.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,175.80 : 79,739.30 = 18,101.18 : x
  2. Step 2: Convert to fraction form
    53,175.80/79,739.30 = 18,101.18/x
  3. Step 3: Cross multiply
    53,175.80x = 79,739.30 × 18,101.18
  4. Step 4: Simplify right side
    53,175.80x = 1,443,375,422.37
  5. Step 5: Solve for x
    x = 1,443,375,422.37/53,175.80
  6. Step 6: Final answer
    x = 27,143.46

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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.