Home / 80,302.00-120,406.31-30,385.95

Finding the Fourth Proportional to 80,302.00, 120,406.31 and 30,385.95

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Solution

The fourth proportional to 80,302.00, 120,406.31 and 30,385.95 is: 45,561.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,302.00 : 120,406.31 = 30,385.95 : x
  2. Step 2: Convert to fraction form
    80,302.00/120,406.31 = 30,385.95/x
  3. Step 3: Cross multiply
    80,302.00x = 120,406.31 × 30,385.95
  4. Step 4: Simplify right side
    80,302.00x = 3,658,660,217.66
  5. Step 5: Solve for x
    x = 3,658,660,217.66/80,302.00
  6. Step 6: Final answer
    x = 45,561.26

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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.