Home / 54,419.20-81,672.48-28,131.60

Finding the Fourth Proportional to 54,419.20, 81,672.48 and 28,131.60

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Solution

The fourth proportional to 54,419.20, 81,672.48 and 28,131.60 is: 42,219.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,419.20 : 81,672.48 = 28,131.60 : x
  2. Step 2: Convert to fraction form
    54,419.20/81,672.48 = 28,131.60/x
  3. Step 3: Cross multiply
    54,419.20x = 81,672.48 × 28,131.60
  4. Step 4: Simplify right side
    54,419.20x = 2,297,577,538.37
  5. Step 5: Solve for x
    x = 2,297,577,538.37/54,419.20
  6. Step 6: Final answer
    x = 42,219.98

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1.5x scale

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.