Home / 69,109.74-103,664.07-19,190.52

Finding the Fourth Proportional to 69,109.74, 103,664.07 and 19,190.52

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Solution

The fourth proportional to 69,109.74, 103,664.07 and 19,190.52 is: 28,785.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,109.74 : 103,664.07 = 19,190.52 : x
  2. Step 2: Convert to fraction form
    69,109.74/103,664.07 = 19,190.52/x
  3. Step 3: Cross multiply
    69,109.74x = 103,664.07 × 19,190.52
  4. Step 4: Simplify right side
    69,109.74x = 1,989,367,408.62
  5. Step 5: Solve for x
    x = 1,989,367,408.62/69,109.74
  6. Step 6: Final answer
    x = 28,785.63

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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.