Home / 57,057.10-78,739.05-31,906.54

Finding the Fourth Proportional to 57,057.10, 78,739.05 and 31,906.54

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Solution

The fourth proportional to 57,057.10, 78,739.05 and 31,906.54 is: 44,031.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,057.10 : 78,739.05 = 31,906.54 : x
  2. Step 2: Convert to fraction form
    57,057.10/78,739.05 = 31,906.54/x
  3. Step 3: Cross multiply
    57,057.10x = 78,739.05 × 31,906.54
  4. Step 4: Simplify right side
    57,057.10x = 2,512,290,648.39
  5. Step 5: Solve for x
    x = 2,512,290,648.39/57,057.10
  6. Step 6: Final answer
    x = 44,031.17

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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.