Home / 69,939.36-104,919.92-28,389.28

Finding the Fourth Proportional to 69,939.36, 104,919.92 and 28,389.28

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Solution

The fourth proportional to 69,939.36, 104,919.92 and 28,389.28 is: 42,588.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,939.36 : 104,919.92 = 28,389.28 : x
  2. Step 2: Convert to fraction form
    69,939.36/104,919.92 = 28,389.28/x
  3. Step 3: Cross multiply
    69,939.36x = 104,919.92 × 28,389.28
  4. Step 4: Simplify right side
    69,939.36x = 2,978,600,986.46
  5. Step 5: Solve for x
    x = 2,978,600,986.46/69,939.36
  6. Step 6: Final answer
    x = 42,588.34

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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.