Home / 40,191,239.88-55,463,390.82-21,856,131.72

Finding the Fourth Proportional to 40,191,239.88, 55,463,390.82 and 21,856,131.72

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Solution

The fourth proportional to 40,191,239.88, 55,463,390.82 and 21,856,131.72 is: 30,161,178.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,191,239.88 : 55,463,390.82 = 21,856,131.72 : x
  2. Step 2: Convert to fraction form
    40,191,239.88/55,463,390.82 = 21,856,131.72/x
  3. Step 3: Cross multiply
    40,191,239.88x = 55,463,390.82 × 21,856,131.72
  4. Step 4: Simplify right side
    40,191,239.88x = 1,212,215,175,399,758.75
  5. Step 5: Solve for x
    x = 1,212,215,175,399,758.75/40,191,239.88
  6. Step 6: Final answer
    x = 30,161,178.88

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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.