Home / 80,945.80-121,361.10-31,006.60

Finding the Fourth Proportional to 80,945.80, 121,361.10 and 31,006.60

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Solution

The fourth proportional to 80,945.80, 121,361.10 and 31,006.60 is: 46,487.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,945.80 : 121,361.10 = 31,006.60 : x
  2. Step 2: Convert to fraction form
    80,945.80/121,361.10 = 31,006.60/x
  3. Step 3: Cross multiply
    80,945.80x = 121,361.10 × 31,006.60
  4. Step 4: Simplify right side
    80,945.80x = 3,762,995,083.26
  5. Step 5: Solve for x
    x = 3,762,995,083.26/80,945.80
  6. Step 6: Final answer
    x = 46,487.84

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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.