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Finding the Fourth Proportional to 31,308, 43,205.04 and 18,067.68

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Solution

The fourth proportional to 31,308, 43,205.04 and 18,067.68 is: 24,933.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,308 : 43,205.04 = 18,067.68 : x
  2. Step 2: Convert to fraction form
    31,308/43,205.04 = 18,067.68/x
  3. Step 3: Cross multiply
    31,308x = 43,205.04 × 18,067.68
  4. Step 4: Simplify right side
    31,308x = 780,614,837.11
  5. Step 5: Solve for x
    x = 780,614,837.11/31,308
  6. Step 6: Final answer
    x = 24,933.40

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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.