Home / 80,120,515.20-120,180,772.80-28,984,081.20

Finding the Fourth Proportional to 80,120,515.20, 120,180,772.80 and 28,984,081.20

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Solution

The fourth proportional to 80,120,515.20, 120,180,772.80 and 28,984,081.20 is: 43,476,121.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,120,515.20 : 120,180,772.80 = 28,984,081.20 : x
  2. Step 2: Convert to fraction form
    80,120,515.20/120,180,772.80 = 28,984,081.20/x
  3. Step 3: Cross multiply
    80,120,515.20x = 120,180,772.80 × 28,984,081.20
  4. Step 4: Simplify right side
    80,120,515.20x = 3,483,329,277,513,951
  5. Step 5: Solve for x
    x = 3,483,329,277,513,951/80,120,515.20
  6. Step 6: Final answer
    x = 43,476,121.80

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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.