Home / 55,917.30-83,801.39-20,821.62

Finding the Fourth Proportional to 55,917.30, 83,801.39 and 20,821.62

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Solution

The fourth proportional to 55,917.30, 83,801.39 and 20,821.62 is: 31,204.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,917.30 : 83,801.39 = 20,821.62 : x
  2. Step 2: Convert to fraction form
    55,917.30/83,801.39 = 20,821.62/x
  3. Step 3: Cross multiply
    55,917.30x = 83,801.39 × 20,821.62
  4. Step 4: Simplify right side
    55,917.30x = 1,744,880,698.05
  5. Step 5: Solve for x
    x = 1,744,880,698.05/55,917.30
  6. Step 6: Final answer
    x = 31,204.67

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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.