Home / 40,778.32-56,197.88-31,811.60

Finding the Fourth Proportional to 40,778.32, 56,197.88 and 31,811.60

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Solution

The fourth proportional to 40,778.32, 56,197.88 and 31,811.60 is: 43,840.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,778.32 : 56,197.88 = 31,811.60 : x
  2. Step 2: Convert to fraction form
    40,778.32/56,197.88 = 31,811.60/x
  3. Step 3: Cross multiply
    40,778.32x = 56,197.88 × 31,811.60
  4. Step 4: Simplify right side
    40,778.32x = 1,787,744,479.41
  5. Step 5: Solve for x
    x = 1,787,744,479.41/40,778.32
  6. Step 6: Final answer
    x = 43,840.56

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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.