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Finding the Fourth Proportional to 69,860.59, 104,791.85 and 19,940.67

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Solution

The fourth proportional to 69,860.59, 104,791.85 and 19,940.67 is: 29,911.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,860.59 : 104,791.85 = 19,940.67 : x
  2. Step 2: Convert to fraction form
    69,860.59/104,791.85 = 19,940.67/x
  3. Step 3: Cross multiply
    69,860.59x = 104,791.85 × 19,940.67
  4. Step 4: Simplify right side
    69,860.59x = 2,089,619,699.54
  5. Step 5: Solve for x
    x = 2,089,619,699.54/69,860.59
  6. Step 6: Final answer
    x = 29,911.28

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1.5x scale

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.