Home / 54,420.40-81,544.20-40,423.60

Finding the Fourth Proportional to 54,420.40, 81,544.20 and 40,423.60

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Solution

The fourth proportional to 54,420.40, 81,544.20 and 40,423.60 is: 60,571.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,420.40 : 81,544.20 = 40,423.60 : x
  2. Step 2: Convert to fraction form
    54,420.40/81,544.20 = 40,423.60/x
  3. Step 3: Cross multiply
    54,420.40x = 81,544.20 × 40,423.60
  4. Step 4: Simplify right side
    54,420.40x = 3,296,310,123.12
  5. Step 5: Solve for x
    x = 3,296,310,123.12/54,420.40
  6. Step 6: Final answer
    x = 60,571.22

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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.