Home / 66,128.37-99,181.62-21,755.67

Finding the Fourth Proportional to 66,128.37, 99,181.62 and 21,755.67

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Solution

The fourth proportional to 66,128.37, 99,181.62 and 21,755.67 is: 32,629.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,128.37 : 99,181.62 = 21,755.67 : x
  2. Step 2: Convert to fraction form
    66,128.37/99,181.62 = 21,755.67/x
  3. Step 3: Cross multiply
    66,128.37x = 99,181.62 × 21,755.67
  4. Step 4: Simplify right side
    66,128.37x = 2,157,762,594.79
  5. Step 5: Solve for x
    x = 2,157,762,594.79/66,128.37
  6. Step 6: Final answer
    x = 32,629.91

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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.