Home / 54,728.40-82,059.68-21,408.72

Finding the Fourth Proportional to 54,728.40, 82,059.68 and 21,408.72

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Solution

The fourth proportional to 54,728.40, 82,059.68 and 21,408.72 is: 32,100.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,728.40 : 82,059.68 = 21,408.72 : x
  2. Step 2: Convert to fraction form
    54,728.40/82,059.68 = 21,408.72/x
  3. Step 3: Cross multiply
    54,728.40x = 82,059.68 × 21,408.72
  4. Step 4: Simplify right side
    54,728.40x = 1,756,792,712.41
  5. Step 5: Solve for x
    x = 1,756,792,712.41/54,728.40
  6. Step 6: Final answer
    x = 32,100.20

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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.