Home / 47,936.88-66,161.52-30,047.40

Finding the Fourth Proportional to 47,936.88, 66,161.52 and 30,047.40

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Solution

The fourth proportional to 47,936.88, 66,161.52 and 30,047.40 is: 41,470.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,936.88 : 66,161.52 = 30,047.40 : x
  2. Step 2: Convert to fraction form
    47,936.88/66,161.52 = 30,047.40/x
  3. Step 3: Cross multiply
    47,936.88x = 66,161.52 × 30,047.40
  4. Step 4: Simplify right side
    47,936.88x = 1,987,981,656.05
  5. Step 5: Solve for x
    x = 1,987,981,656.05/47,936.88
  6. Step 6: Final answer
    x = 41,470.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.