Home / 78,297,718.80-117,446,578.20-45,965,110.80

Finding the Fourth Proportional to 78,297,718.80, 117,446,578.20 and 45,965,110.80

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Solution

The fourth proportional to 78,297,718.80, 117,446,578.20 and 45,965,110.80 is: 68,947,666.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,297,718.80 : 117,446,578.20 = 45,965,110.80 : x
  2. Step 2: Convert to fraction form
    78,297,718.80/117,446,578.20 = 45,965,110.80/x
  3. Step 3: Cross multiply
    78,297,718.80x = 117,446,578.20 × 45,965,110.80
  4. Step 4: Simplify right side
    78,297,718.80x = 5,398,444,980,043,864
  5. Step 5: Solve for x
    x = 5,398,444,980,043,864/78,297,718.80
  6. Step 6: Final answer
    x = 68,947,666.20

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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.