Home / 66,218.85-99,331.38-21,849.48

Finding the Fourth Proportional to 66,218.85, 99,331.38 and 21,849.48

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Solution

The fourth proportional to 66,218.85, 99,331.38 and 21,849.48 is: 32,775.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,218.85 : 99,331.38 = 21,849.48 : x
  2. Step 2: Convert to fraction form
    66,218.85/99,331.38 = 21,849.48/x
  3. Step 3: Cross multiply
    66,218.85x = 99,331.38 × 21,849.48
  4. Step 4: Simplify right side
    66,218.85x = 2,170,339,000.68
  5. Step 5: Solve for x
    x = 2,170,339,000.68/66,218.85
  6. Step 6: Final answer
    x = 32,775.24

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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.