Home / 54,212.40-81,232.20-40,215.60

Finding the Fourth Proportional to 54,212.40, 81,232.20 and 40,215.60

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Solution

The fourth proportional to 54,212.40, 81,232.20 and 40,215.60 is: 60,259.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,212.40 : 81,232.20 = 40,215.60 : x
  2. Step 2: Convert to fraction form
    54,212.40/81,232.20 = 40,215.60/x
  3. Step 3: Cross multiply
    54,212.40x = 81,232.20 × 40,215.60
  4. Step 4: Simplify right side
    54,212.40x = 3,266,801,662.32
  5. Step 5: Solve for x
    x = 3,266,801,662.32/54,212.40
  6. Step 6: Final answer
    x = 60,259.31

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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.