Home / 39,855.72-55,007.46-30,406.44

Finding the Fourth Proportional to 39,855.72, 55,007.46 and 30,406.44

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Solution

The fourth proportional to 39,855.72, 55,007.46 and 30,406.44 is: 41,965.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,855.72 : 55,007.46 = 30,406.44 : x
  2. Step 2: Convert to fraction form
    39,855.72/55,007.46 = 30,406.44/x
  3. Step 3: Cross multiply
    39,855.72x = 55,007.46 × 30,406.44
  4. Step 4: Simplify right side
    39,855.72x = 1,672,581,032.04
  5. Step 5: Solve for x
    x = 1,672,581,032.04/39,855.72
  6. Step 6: Final answer
    x = 41,965.90

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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.