Home / 40,405,890.46-55,760,126.70-21,821,028.81

Finding the Fourth Proportional to 40,405,890.46, 55,760,126.70 and 21,821,028.81

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Solution

The fourth proportional to 40,405,890.46, 55,760,126.70 and 21,821,028.81 is: 30,113,018.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,405,890.46 : 55,760,126.70 = 21,821,028.81 : x
  2. Step 2: Convert to fraction form
    40,405,890.46/55,760,126.70 = 21,821,028.81/x
  3. Step 3: Cross multiply
    40,405,890.46x = 55,760,126.70 × 21,821,028.81
  4. Step 4: Simplify right side
    40,405,890.46x = 1,216,743,331,147,228.75
  5. Step 5: Solve for x
    x = 1,216,743,331,147,228.75/40,405,890.46
  6. Step 6: Final answer
    x = 30,113,018.60

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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.