Home / 66,122.20-99,183.30-39,878.20

Finding the Fourth Proportional to 66,122.20, 99,183.30 and 39,878.20

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Solution

The fourth proportional to 66,122.20, 99,183.30 and 39,878.20 is: 59,817.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,122.20 : 99,183.30 = 39,878.20 : x
  2. Step 2: Convert to fraction form
    66,122.20/99,183.30 = 39,878.20/x
  3. Step 3: Cross multiply
    66,122.20x = 99,183.30 × 39,878.20
  4. Step 4: Simplify right side
    66,122.20x = 3,955,251,474.06
  5. Step 5: Solve for x
    x = 3,955,251,474.06/66,122.20
  6. Step 6: Final answer
    x = 59,817.30

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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.