Home / 47,191.78-70,738.46-19,131.20

Finding the Fourth Proportional to 47,191.78, 70,738.46 and 19,131.20

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Solution

The fourth proportional to 47,191.78, 70,738.46 and 19,131.20 is: 28,676.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,191.78 : 70,738.46 = 19,131.20 : x
  2. Step 2: Convert to fraction form
    47,191.78/70,738.46 = 19,131.20/x
  3. Step 3: Cross multiply
    47,191.78x = 70,738.46 × 19,131.20
  4. Step 4: Simplify right side
    47,191.78x = 1,353,311,625.95
  5. Step 5: Solve for x
    x = 1,353,311,625.95/47,191.78
  6. Step 6: Final answer
    x = 28,676.85

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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.