Home / 54,586.80-81,880.20-31,215.60

Finding the Fourth Proportional to 54,586.80, 81,880.20 and 31,215.60

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Solution

The fourth proportional to 54,586.80, 81,880.20 and 31,215.60 is: 46,823.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,586.80 : 81,880.20 = 31,215.60 : x
  2. Step 2: Convert to fraction form
    54,586.80/81,880.20 = 31,215.60/x
  3. Step 3: Cross multiply
    54,586.80x = 81,880.20 × 31,215.60
  4. Step 4: Simplify right side
    54,586.80x = 2,555,939,571.12
  5. Step 5: Solve for x
    x = 2,555,939,571.12/54,586.80
  6. Step 6: Final answer
    x = 46,823.40

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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.