Home / 80,611.04-120,373.36-65,849.12

Finding the Fourth Proportional to 80,611.04, 120,373.36 and 65,849.12

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Solution

The fourth proportional to 80,611.04, 120,373.36 and 65,849.12 is: 98,329.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,611.04 : 120,373.36 = 65,849.12 : x
  2. Step 2: Convert to fraction form
    80,611.04/120,373.36 = 65,849.12/x
  3. Step 3: Cross multiply
    80,611.04x = 120,373.36 × 65,849.12
  4. Step 4: Simplify right side
    80,611.04x = 7,926,479,827.44
  5. Step 5: Solve for x
    x = 7,926,479,827.44/80,611.04
  6. Step 6: Final answer
    x = 98,329.95

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.