Home / 43,719.20-65,546.40-18,738.80

Finding the Fourth Proportional to 43,719.20, 65,546.40 and 18,738.80

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Solution

The fourth proportional to 43,719.20, 65,546.40 and 18,738.80 is: 28,094.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,719.20 : 65,546.40 = 18,738.80 : x
  2. Step 2: Convert to fraction form
    43,719.20/65,546.40 = 18,738.80/x
  3. Step 3: Cross multiply
    43,719.20x = 65,546.40 × 18,738.80
  4. Step 4: Simplify right side
    43,719.20x = 1,228,260,880.32
  5. Step 5: Solve for x
    x = 1,228,260,880.32/43,719.20
  6. Step 6: Final answer
    x = 28,094.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.