Home / 86,990,161.53-120,045,578.88-47,297,691.69

Finding the Fourth Proportional to 86,990,161.53, 120,045,578.88 and 47,297,691.69

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Solution

The fourth proportional to 86,990,161.53, 120,045,578.88 and 47,297,691.69 is: 65,270,355.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,990,161.53 : 120,045,578.88 = 47,297,691.69 : x
  2. Step 2: Convert to fraction form
    86,990,161.53/120,045,578.88 = 47,297,691.69/x
  3. Step 3: Cross multiply
    86,990,161.53x = 120,045,578.88 × 47,297,691.69
  4. Step 4: Simplify right side
    86,990,161.53x = 5,677,878,778,613,815
  5. Step 5: Solve for x
    x = 5,677,878,778,613,815/86,990,161.53
  6. Step 6: Final answer
    x = 65,270,355.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.