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Finding the Fourth Proportional to 30,129.44, 45,194.43 and 7,945.97

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Solution

The fourth proportional to 30,129.44, 45,194.43 and 7,945.97 is: 11,919.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,129.44 : 45,194.43 = 7,945.97 : x
  2. Step 2: Convert to fraction form
    30,129.44/45,194.43 = 7,945.97/x
  3. Step 3: Cross multiply
    30,129.44x = 45,194.43 × 7,945.97
  4. Step 4: Simplify right side
    30,129.44x = 359,113,584.95
  5. Step 5: Solve for x
    x = 359,113,584.95/30,129.44
  6. Step 6: Final answer
    x = 11,919.03

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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.