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Finding the Fourth Proportional to 66,223.56, 99,219.78 and 55,201.08

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Solution

The fourth proportional to 66,223.56, 99,219.78 and 55,201.08 is: 82,705.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,223.56 : 99,219.78 = 55,201.08 : x
  2. Step 2: Convert to fraction form
    66,223.56/99,219.78 = 55,201.08/x
  3. Step 3: Cross multiply
    66,223.56x = 99,219.78 × 55,201.08
  4. Step 4: Simplify right side
    66,223.56x = 5,477,039,013.36
  5. Step 5: Solve for x
    x = 5,477,039,013.36/66,223.56
  6. Step 6: Final answer
    x = 82,705.29

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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.