Home / 31,361.85-47,043.05-7,988.27

Finding the Fourth Proportional to 31,361.85, 47,043.05 and 7,988.27

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Solution

The fourth proportional to 31,361.85, 47,043.05 and 7,988.27 is: 11,982.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,361.85 : 47,043.05 = 7,988.27 : x
  2. Step 2: Convert to fraction form
    31,361.85/47,043.05 = 7,988.27/x
  3. Step 3: Cross multiply
    31,361.85x = 47,043.05 × 7,988.27
  4. Step 4: Simplify right side
    31,361.85x = 375,792,309.87
  5. Step 5: Solve for x
    x = 375,792,309.87/31,361.85
  6. Step 6: Final answer
    x = 11,982.47

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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.