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Finding the Fourth Proportional to 78,310.56, 108,067.05 and 44,317.71

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Solution

The fourth proportional to 78,310.56, 108,067.05 and 44,317.71 is: 61,157.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,310.56 : 108,067.05 = 44,317.71 : x
  2. Step 2: Convert to fraction form
    78,310.56/108,067.05 = 44,317.71/x
  3. Step 3: Cross multiply
    78,310.56x = 108,067.05 × 44,317.71
  4. Step 4: Simplify right side
    78,310.56x = 4,789,284,182.46
  5. Step 5: Solve for x
    x = 4,789,284,182.46/78,310.56
  6. Step 6: Final answer
    x = 61,157.58

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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.