Home / 72,191,699.96-108,279,873.56-20,375,021.48

Finding the Fourth Proportional to 72,191,699.96, 108,279,873.56 and 20,375,021.48

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Solution

The fourth proportional to 72,191,699.96, 108,279,873.56 and 20,375,021.48 is: 30,560,365.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,191,699.96 : 108,279,873.56 = 20,375,021.48 : x
  2. Step 2: Convert to fraction form
    72,191,699.96/108,279,873.56 = 20,375,021.48/x
  3. Step 3: Cross multiply
    72,191,699.96x = 108,279,873.56 × 20,375,021.48
  4. Step 4: Simplify right side
    72,191,699.96x = 2,206,204,749,146,222.50
  5. Step 5: Solve for x
    x = 2,206,204,749,146,222.50/72,191,699.96
  6. Step 6: Final answer
    x = 30,560,365.67

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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.