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Finding the Fourth Proportional to 80,527.99, 120,826.11 and 43,078.25

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Solution

The fourth proportional to 80,527.99, 120,826.11 and 43,078.25 is: 64,635.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,527.99 : 120,826.11 = 43,078.25 : x
  2. Step 2: Convert to fraction form
    80,527.99/120,826.11 = 43,078.25/x
  3. Step 3: Cross multiply
    80,527.99x = 120,826.11 × 43,078.25
  4. Step 4: Simplify right side
    80,527.99x = 5,204,977,373.11
  5. Step 5: Solve for x
    x = 5,204,977,373.11/80,527.99
  6. Step 6: Final answer
    x = 64,635.63

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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.