Home / 39,909.90-55,076.04-22,005.55

Finding the Fourth Proportional to 39,909.90, 55,076.04 and 22,005.55

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Solution

The fourth proportional to 39,909.90, 55,076.04 and 22,005.55 is: 30,367.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,909.90 : 55,076.04 = 22,005.55 : x
  2. Step 2: Convert to fraction form
    39,909.90/55,076.04 = 22,005.55/x
  3. Step 3: Cross multiply
    39,909.90x = 55,076.04 × 22,005.55
  4. Step 4: Simplify right side
    39,909.90x = 1,211,978,620.87
  5. Step 5: Solve for x
    x = 1,211,978,620.87/39,909.90
  6. Step 6: Final answer
    x = 30,367.87

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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.