Home / 39,975.10-55,164.54-22,069.78

Finding the Fourth Proportional to 39,975.10, 55,164.54 and 22,069.78

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Solution

The fourth proportional to 39,975.10, 55,164.54 and 22,069.78 is: 30,455.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,975.10 : 55,164.54 = 22,069.78 : x
  2. Step 2: Convert to fraction form
    39,975.10/55,164.54 = 22,069.78/x
  3. Step 3: Cross multiply
    39,975.10x = 55,164.54 × 22,069.78
  4. Step 4: Simplify right side
    39,975.10x = 1,217,469,261.60
  5. Step 5: Solve for x
    x = 1,217,469,261.60/39,975.10
  6. Step 6: Final answer
    x = 30,455.69

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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.