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Finding the Fourth Proportional to 53,914.40, 80,842.80 and 18,855.20

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Solution

The fourth proportional to 53,914.40, 80,842.80 and 18,855.20 is: 28,272.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,914.40 : 80,842.80 = 18,855.20 : x
  2. Step 2: Convert to fraction form
    53,914.40/80,842.80 = 18,855.20/x
  3. Step 3: Cross multiply
    53,914.40x = 80,842.80 × 18,855.20
  4. Step 4: Simplify right side
    53,914.40x = 1,524,307,162.56
  5. Step 5: Solve for x
    x = 1,524,307,162.56/53,914.40
  6. Step 6: Final answer
    x = 28,272.73

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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.