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Finding the Fourth Proportional to 66,907.80, 100,337.40 and 33,616.80

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Solution

The fourth proportional to 66,907.80, 100,337.40 and 33,616.80 is: 50,412.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,907.80 : 100,337.40 = 33,616.80 : x
  2. Step 2: Convert to fraction form
    66,907.80/100,337.40 = 33,616.80/x
  3. Step 3: Cross multiply
    66,907.80x = 100,337.40 × 33,616.80
  4. Step 4: Simplify right side
    66,907.80x = 3,373,022,308.32
  5. Step 5: Solve for x
    x = 3,373,022,308.32/66,907.80
  6. Step 6: Final answer
    x = 50,412.99

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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.