Home / 80,365.42-120,551.84-66,299.36

Finding the Fourth Proportional to 80,365.42, 120,551.84 and 66,299.36

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Solution

The fourth proportional to 80,365.42, 120,551.84 and 66,299.36 is: 99,452.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,365.42 : 120,551.84 = 66,299.36 : x
  2. Step 2: Convert to fraction form
    80,365.42/120,551.84 = 66,299.36/x
  3. Step 3: Cross multiply
    80,365.42x = 120,551.84 × 66,299.36
  4. Step 4: Simplify right side
    80,365.42x = 7,992,510,204.23
  5. Step 5: Solve for x
    x = 7,992,510,204.23/80,365.42
  6. Step 6: Final answer
    x = 99,452.11

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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.