Home / 66,986,571.36-100,468,712.31-20,288,954.56

Finding the Fourth Proportional to 66,986,571.36, 100,468,712.31 and 20,288,954.56

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Solution

The fourth proportional to 66,986,571.36, 100,468,712.31 and 20,288,954.56 is: 30,430,056.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,986,571.36 : 100,468,712.31 = 20,288,954.56 : x
  2. Step 2: Convert to fraction form
    66,986,571.36/100,468,712.31 = 20,288,954.56/x
  3. Step 3: Cross multiply
    66,986,571.36x = 100,468,712.31 × 20,288,954.56
  4. Step 4: Simplify right side
    66,986,571.36x = 2,038,405,138,759,302.50
  5. Step 5: Solve for x
    x = 2,038,405,138,759,302.50/66,986,571.36
  6. Step 6: Final answer
    x = 30,430,056.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.