Home / 57,205.04-78,855.46-40,161.49

Finding the Fourth Proportional to 57,205.04, 78,855.46 and 40,161.49

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Solution

The fourth proportional to 57,205.04, 78,855.46 and 40,161.49 is: 55,361.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,205.04 : 78,855.46 = 40,161.49 : x
  2. Step 2: Convert to fraction form
    57,205.04/78,855.46 = 40,161.49/x
  3. Step 3: Cross multiply
    57,205.04x = 78,855.46 × 40,161.49
  4. Step 4: Simplify right side
    57,205.04x = 3,166,952,470.69
  5. Step 5: Solve for x
    x = 3,166,952,470.69/57,205.04
  6. Step 6: Final answer
    x = 55,361.43

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1.5x scale

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.