Home / 40,129,992.96-55,379,673.72-21,795,278.46

Finding the Fourth Proportional to 40,129,992.96, 55,379,673.72 and 21,795,278.46

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Solution

The fourth proportional to 40,129,992.96, 55,379,673.72 and 21,795,278.46 is: 30,077,638.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,129,992.96 : 55,379,673.72 = 21,795,278.46 : x
  2. Step 2: Convert to fraction form
    40,129,992.96/55,379,673.72 = 21,795,278.46/x
  3. Step 3: Cross multiply
    40,129,992.96x = 55,379,673.72 × 21,795,278.46
  4. Step 4: Simplify right side
    40,129,992.96x = 1,207,015,409,751,344
  5. Step 5: Solve for x
    x = 1,207,015,409,751,344/40,129,992.96
  6. Step 6: Final answer
    x = 30,077,638.21

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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.