Home / 57,120.82-78,855.34-35,911.78

Finding the Fourth Proportional to 57,120.82, 78,855.34 and 35,911.78

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Solution

The fourth proportional to 57,120.82, 78,855.34 and 35,911.78 is: 49,576.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,120.82 : 78,855.34 = 35,911.78 : x
  2. Step 2: Convert to fraction form
    57,120.82/78,855.34 = 35,911.78/x
  3. Step 3: Cross multiply
    57,120.82x = 78,855.34 × 35,911.78
  4. Step 4: Simplify right side
    57,120.82x = 2,831,835,621.91
  5. Step 5: Solve for x
    x = 2,831,835,621.91/57,120.82
  6. Step 6: Final answer
    x = 49,576.24

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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.