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Finding the Fourth Proportional to 79,765.88, 110,078.28 and 51,520.77

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Solution

The fourth proportional to 79,765.88, 110,078.28 and 51,520.77 is: 71,099.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,765.88 : 110,078.28 = 51,520.77 : x
  2. Step 2: Convert to fraction form
    79,765.88/110,078.28 = 51,520.77/x
  3. Step 3: Cross multiply
    79,765.88x = 110,078.28 × 51,520.77
  4. Step 4: Simplify right side
    79,765.88x = 5,671,317,745.88
  5. Step 5: Solve for x
    x = 5,671,317,745.88/79,765.88
  6. Step 6: Final answer
    x = 71,099.55

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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.