Home / 66,911.04-100,421.78-33,640.56

Finding the Fourth Proportional to 66,911.04, 100,421.78 and 33,640.56

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Solution

The fourth proportional to 66,911.04, 100,421.78 and 33,640.56 is: 50,488.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,911.04 : 100,421.78 = 33,640.56 : x
  2. Step 2: Convert to fraction form
    66,911.04/100,421.78 = 33,640.56/x
  3. Step 3: Cross multiply
    66,911.04x = 100,421.78 × 33,640.56
  4. Step 4: Simplify right side
    66,911.04x = 3,378,244,915.40
  5. Step 5: Solve for x
    x = 3,378,244,915.40/66,911.04
  6. Step 6: Final answer
    x = 50,488.60

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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.