Home / 76,817.20-115,254.60-30,103.60

Finding the Fourth Proportional to 76,817.20, 115,254.60 and 30,103.60

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Solution

The fourth proportional to 76,817.20, 115,254.60 and 30,103.60 is: 45,166.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,817.20 : 115,254.60 = 30,103.60 : x
  2. Step 2: Convert to fraction form
    76,817.20/115,254.60 = 30,103.60/x
  3. Step 3: Cross multiply
    76,817.20x = 115,254.60 × 30,103.60
  4. Step 4: Simplify right side
    76,817.20x = 3,469,578,376.56
  5. Step 5: Solve for x
    x = 3,469,578,376.56/76,817.20
  6. Step 6: Final answer
    x = 45,166.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.