Home / 57,243.03-78,912.44-40,195.35

Finding the Fourth Proportional to 57,243.03, 78,912.44 and 40,195.35

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Solution

The fourth proportional to 57,243.03, 78,912.44 and 40,195.35 is: 55,411.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,243.03 : 78,912.44 = 40,195.35 : x
  2. Step 2: Convert to fraction form
    57,243.03/78,912.44 = 40,195.35/x
  3. Step 3: Cross multiply
    57,243.03x = 78,912.44 × 40,195.35
  4. Step 4: Simplify right side
    57,243.03x = 3,171,912,944.18
  5. Step 5: Solve for x
    x = 3,171,912,944.18/57,243.03
  6. Step 6: Final answer
    x = 55,411.34

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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.