Home / 66,621.44-99,932.16-19,907.12

Finding the Fourth Proportional to 66,621.44, 99,932.16 and 19,907.12

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Solution

The fourth proportional to 66,621.44, 99,932.16 and 19,907.12 is: 29,860.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,621.44 : 99,932.16 = 19,907.12 : x
  2. Step 2: Convert to fraction form
    66,621.44/99,932.16 = 19,907.12/x
  3. Step 3: Cross multiply
    66,621.44x = 99,932.16 × 19,907.12
  4. Step 4: Simplify right side
    66,621.44x = 1,989,361,500.98
  5. Step 5: Solve for x
    x = 1,989,361,500.98/66,621.44
  6. Step 6: Final answer
    x = 29,860.68

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Similar ratio
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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.