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Finding the Fourth Proportional to 69,399.40, 104,083.51 and 31,923.48

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Solution

The fourth proportional to 69,399.40, 104,083.51 and 31,923.48 is: 47,878.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,399.40 : 104,083.51 = 31,923.48 : x
  2. Step 2: Convert to fraction form
    69,399.40/104,083.51 = 31,923.48/x
  3. Step 3: Cross multiply
    69,399.40x = 104,083.51 × 31,923.48
  4. Step 4: Simplify right side
    69,399.40x = 3,322,707,849.81
  5. Step 5: Solve for x
    x = 3,322,707,849.81/69,399.40
  6. Step 6: Final answer
    x = 47,878.05

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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.