Home / 80,687.61-120,732.84-48,685.23

Finding the Fourth Proportional to 80,687.61, 120,732.84 and 48,685.23

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Solution

The fourth proportional to 80,687.61, 120,732.84 and 48,685.23 is: 72,847.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,687.61 : 120,732.84 = 48,685.23 : x
  2. Step 2: Convert to fraction form
    80,687.61/120,732.84 = 48,685.23/x
  3. Step 3: Cross multiply
    80,687.61x = 120,732.84 × 48,685.23
  4. Step 4: Simplify right side
    80,687.61x = 5,877,906,083.95
  5. Step 5: Solve for x
    x = 5,877,906,083.95/80,687.61
  6. Step 6: Final answer
    x = 72,847.69

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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.