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Finding the Fourth Proportional to 78,310.08, 108,041.04 and 44,314.56

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Solution

The fourth proportional to 78,310.08, 108,041.04 and 44,314.56 is: 61,138.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,310.08 : 108,041.04 = 44,314.56 : x
  2. Step 2: Convert to fraction form
    78,310.08/108,041.04 = 44,314.56/x
  3. Step 3: Cross multiply
    78,310.08x = 108,041.04 × 44,314.56
  4. Step 4: Simplify right side
    78,310.08x = 4,787,791,149.54
  5. Step 5: Solve for x
    x = 4,787,791,149.54/78,310.08
  6. Step 6: Final answer
    x = 61,138.89

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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.