Home / 69,431.78-104,147.67-19,516.92

Finding the Fourth Proportional to 69,431.78, 104,147.67 and 19,516.92

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Solution

The fourth proportional to 69,431.78, 104,147.67 and 19,516.92 is: 29,275.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,431.78 : 104,147.67 = 19,516.92 : x
  2. Step 2: Convert to fraction form
    69,431.78/104,147.67 = 19,516.92/x
  3. Step 3: Cross multiply
    69,431.78x = 104,147.67 × 19,516.92
  4. Step 4: Simplify right side
    69,431.78x = 2,032,642,304.96
  5. Step 5: Solve for x
    x = 2,032,642,304.96/69,431.78
  6. Step 6: Final answer
    x = 29,275.39

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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.