Home / 66,012.96-99,022.68-21,621.72

Finding the Fourth Proportional to 66,012.96, 99,022.68 and 21,621.72

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Solution

The fourth proportional to 66,012.96, 99,022.68 and 21,621.72 is: 32,433.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,012.96 : 99,022.68 = 21,621.72 : x
  2. Step 2: Convert to fraction form
    66,012.96/99,022.68 = 21,621.72/x
  3. Step 3: Cross multiply
    66,012.96x = 99,022.68 × 21,621.72
  4. Step 4: Simplify right side
    66,012.96x = 2,141,040,660.61
  5. Step 5: Solve for x
    x = 2,141,040,660.61/66,012.96
  6. Step 6: Final answer
    x = 32,433.64

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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.