Home / 78,153.24-117,072.78-35,974.38

Finding the Fourth Proportional to 78,153.24, 117,072.78 and 35,974.38

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Solution

The fourth proportional to 78,153.24, 117,072.78 and 35,974.38 is: 53,889.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,153.24 : 117,072.78 = 35,974.38 : x
  2. Step 2: Convert to fraction form
    78,153.24/117,072.78 = 35,974.38/x
  3. Step 3: Cross multiply
    78,153.24x = 117,072.78 × 35,974.38
  4. Step 4: Simplify right side
    78,153.24x = 4,211,620,675.38
  5. Step 5: Solve for x
    x = 4,211,620,675.38/78,153.24
  6. Step 6: Final answer
    x = 53,889.27

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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.