Home / 40,129,984.71-55,379,662.34-21,795,270.21

Finding the Fourth Proportional to 40,129,984.71, 55,379,662.34 and 21,795,270.21

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Solution

The fourth proportional to 40,129,984.71, 55,379,662.34 and 21,795,270.21 is: 30,077,626.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,129,984.71 : 55,379,662.34 = 21,795,270.21 : x
  2. Step 2: Convert to fraction form
    40,129,984.71/55,379,662.34 = 21,795,270.21/x
  3. Step 3: Cross multiply
    40,129,984.71x = 55,379,662.34 × 21,795,270.21
  4. Step 4: Simplify right side
    40,129,984.71x = 1,207,014,704,729,884.50
  5. Step 5: Solve for x
    x = 1,207,014,704,729,884.50/40,129,984.71
  6. Step 6: Final answer
    x = 30,077,626.83

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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.