Home / 66,845.03-100,289.88-21,868.45

Finding the Fourth Proportional to 66,845.03, 100,289.88 and 21,868.45

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Solution

The fourth proportional to 66,845.03, 100,289.88 and 21,868.45 is: 32,809.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,845.03 : 100,289.88 = 21,868.45 : x
  2. Step 2: Convert to fraction form
    66,845.03/100,289.88 = 21,868.45/x
  3. Step 3: Cross multiply
    66,845.03x = 100,289.88 × 21,868.45
  4. Step 4: Simplify right side
    66,845.03x = 2,193,183,975.56
  5. Step 5: Solve for x
    x = 2,193,183,975.56/66,845.03
  6. Step 6: Final answer
    x = 32,809.98

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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.