Home / 80,334.99-120,576.60-40,921.47

Finding the Fourth Proportional to 80,334.99, 120,576.60 and 40,921.47

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Solution

The fourth proportional to 80,334.99, 120,576.60 and 40,921.47 is: 61,419.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,334.99 : 120,576.60 = 40,921.47 : x
  2. Step 2: Convert to fraction form
    80,334.99/120,576.60 = 40,921.47/x
  3. Step 3: Cross multiply
    80,334.99x = 120,576.60 × 40,921.47
  4. Step 4: Simplify right side
    80,334.99x = 4,934,171,719.60
  5. Step 5: Solve for x
    x = 4,934,171,719.60/80,334.99
  6. Step 6: Final answer
    x = 61,419.96

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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.