Home / 54,742.40-82,135.20-21,456.80

Finding the Fourth Proportional to 54,742.40, 82,135.20 and 21,456.80

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Solution

The fourth proportional to 54,742.40, 82,135.20 and 21,456.80 is: 32,193.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,742.40 : 82,135.20 = 21,456.80 : x
  2. Step 2: Convert to fraction form
    54,742.40/82,135.20 = 21,456.80/x
  3. Step 3: Cross multiply
    54,742.40x = 82,135.20 × 21,456.80
  4. Step 4: Simplify right side
    54,742.40x = 1,762,358,559.36
  5. Step 5: Solve for x
    x = 1,762,358,559.36/54,742.40
  6. Step 6: Final answer
    x = 32,193.67

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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.