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Finding the Fourth Proportional to 57,378.63, 79,184.89 and 31,884.90

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Solution

The fourth proportional to 57,378.63, 79,184.89 and 31,884.90 is: 44,002.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,378.63 : 79,184.89 = 31,884.90 : x
  2. Step 2: Convert to fraction form
    57,378.63/79,184.89 = 31,884.90/x
  3. Step 3: Cross multiply
    57,378.63x = 79,184.89 × 31,884.90
  4. Step 4: Simplify right side
    57,378.63x = 2,524,802,299.16
  5. Step 5: Solve for x
    x = 2,524,802,299.16/57,378.63
  6. Step 6: Final answer
    x = 44,002.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.