Home / 69,040.68-103,561.26-21,009.75

Finding the Fourth Proportional to 69,040.68, 103,561.26 and 21,009.75

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Solution

The fourth proportional to 69,040.68, 103,561.26 and 21,009.75 is: 31,514.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,040.68 : 103,561.26 = 21,009.75 : x
  2. Step 2: Convert to fraction form
    69,040.68/103,561.26 = 21,009.75/x
  3. Step 3: Cross multiply
    69,040.68x = 103,561.26 × 21,009.75
  4. Step 4: Simplify right side
    69,040.68x = 2,175,796,182.29
  5. Step 5: Solve for x
    x = 2,175,796,182.29/69,040.68
  6. Step 6: Final answer
    x = 31,514.70

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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.