Home / 57,183.20-78,905.34-31,688.33

Finding the Fourth Proportional to 57,183.20, 78,905.34 and 31,688.33

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Solution

The fourth proportional to 57,183.20, 78,905.34 and 31,688.33 is: 43,725.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,183.20 : 78,905.34 = 31,688.33 : x
  2. Step 2: Convert to fraction form
    57,183.20/78,905.34 = 31,688.33/x
  3. Step 3: Cross multiply
    57,183.20x = 78,905.34 × 31,688.33
  4. Step 4: Simplify right side
    57,183.20x = 2,500,378,058.16
  5. Step 5: Solve for x
    x = 2,500,378,058.16/57,183.20
  6. Step 6: Final answer
    x = 43,725.75

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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.