Home / 40,168.58-55,439.50-23,169.78

Finding the Fourth Proportional to 40,168.58, 55,439.50 and 23,169.78

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Solution

The fourth proportional to 40,168.58, 55,439.50 and 23,169.78 is: 31,978.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,168.58 : 55,439.50 = 23,169.78 : x
  2. Step 2: Convert to fraction form
    40,168.58/55,439.50 = 23,169.78/x
  3. Step 3: Cross multiply
    40,168.58x = 55,439.50 × 23,169.78
  4. Step 4: Simplify right side
    40,168.58x = 1,284,521,018.31
  5. Step 5: Solve for x
    x = 1,284,521,018.31/40,168.58
  6. Step 6: Final answer
    x = 31,978.25

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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.