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Finding the Fourth Proportional to 55,388.57, 83,082.85 and 43,880.09

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Solution

The fourth proportional to 55,388.57, 83,082.85 and 43,880.09 is: 65,820.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,388.57 : 83,082.85 = 43,880.09 : x
  2. Step 2: Convert to fraction form
    55,388.57/83,082.85 = 43,880.09/x
  3. Step 3: Cross multiply
    55,388.57x = 83,082.85 × 43,880.09
  4. Step 4: Simplify right side
    55,388.57x = 3,645,682,410.34
  5. Step 5: Solve for x
    x = 3,645,682,410.34/55,388.57
  6. Step 6: Final answer
    x = 65,820.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.