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Finding the Fourth Proportional to 80,518.73, 120,798.97 and 30,599.69

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Solution

The fourth proportional to 80,518.73, 120,798.97 and 30,599.69 is: 45,907.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,518.73 : 120,798.97 = 30,599.69 : x
  2. Step 2: Convert to fraction form
    80,518.73/120,798.97 = 30,599.69/x
  3. Step 3: Cross multiply
    80,518.73x = 120,798.97 × 30,599.69
  4. Step 4: Simplify right side
    80,518.73x = 3,696,410,353.83
  5. Step 5: Solve for x
    x = 3,696,410,353.83/80,518.73
  6. Step 6: Final answer
    x = 45,907.46

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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.