Home / 80,642,757.35-120,964,136.03-72,328,658.15

Finding the Fourth Proportional to 80,642,757.35, 120,964,136.03 and 72,328,658.15

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Solution

The fourth proportional to 80,642,757.35, 120,964,136.03 and 72,328,658.15 is: 108,492,987.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,642,757.35 : 120,964,136.03 = 72,328,658.15 : x
  2. Step 2: Convert to fraction form
    80,642,757.35/120,964,136.03 = 72,328,658.15/x
  3. Step 3: Cross multiply
    80,642,757.35x = 120,964,136.03 × 72,328,658.15
  4. Step 4: Simplify right side
    80,642,757.35x = 8,749,173,642,962,326
  5. Step 5: Solve for x
    x = 8,749,173,642,962,326/80,642,757.35
  6. Step 6: Final answer
    x = 108,492,987.23

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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.