Home / 72,568,045.64-100,143,908.40-39,972,997.64

Finding the Fourth Proportional to 72,568,045.64, 100,143,908.40 and 39,972,997.64

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Solution

The fourth proportional to 72,568,045.64, 100,143,908.40 and 39,972,997.64 is: 55,162,739.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,568,045.64 : 100,143,908.40 = 39,972,997.64 : x
  2. Step 2: Convert to fraction form
    72,568,045.64/100,143,908.40 = 39,972,997.64/x
  3. Step 3: Cross multiply
    72,568,045.64x = 100,143,908.40 × 39,972,997.64
  4. Step 4: Simplify right side
    72,568,045.64x = 4,003,052,214,133,576.50
  5. Step 5: Solve for x
    x = 4,003,052,214,133,576.50/72,568,045.64
  6. Step 6: Final answer
    x = 55,162,739.73

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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.