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Finding the Fourth Proportional to 78,287.52, 108,025.20 and 44,286.96

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Solution

The fourth proportional to 78,287.52, 108,025.20 and 44,286.96 is: 61,109.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,287.52 : 108,025.20 = 44,286.96 : x
  2. Step 2: Convert to fraction form
    78,287.52/108,025.20 = 44,286.96/x
  3. Step 3: Cross multiply
    78,287.52x = 108,025.20 × 44,286.96
  4. Step 4: Simplify right side
    78,287.52x = 4,784,107,711.39
  5. Step 5: Solve for x
    x = 4,784,107,711.39/78,287.52
  6. Step 6: Final answer
    x = 61,109.46

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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.