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Finding the Fourth Proportional to 78,023.79, 107,672.79 and 44,039.41

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Solution

The fourth proportional to 78,023.79, 107,672.79 and 44,039.41 is: 60,774.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,023.79 : 107,672.79 = 44,039.41 : x
  2. Step 2: Convert to fraction form
    78,023.79/107,672.79 = 44,039.41/x
  3. Step 3: Cross multiply
    78,023.79x = 107,672.79 × 44,039.41
  4. Step 4: Simplify right side
    78,023.79x = 4,741,846,040.62
  5. Step 5: Solve for x
    x = 4,741,846,040.62/78,023.79
  6. Step 6: Final answer
    x = 60,774.36

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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.