Home / 71,899.64-107,849.73-21,979.54

Finding the Fourth Proportional to 71,899.64, 107,849.73 and 21,979.54

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Solution

The fourth proportional to 71,899.64, 107,849.73 and 21,979.54 is: 32,969.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,899.64 : 107,849.73 = 21,979.54 : x
  2. Step 2: Convert to fraction form
    71,899.64/107,849.73 = 21,979.54/x
  3. Step 3: Cross multiply
    71,899.64x = 107,849.73 × 21,979.54
  4. Step 4: Simplify right side
    71,899.64x = 2,370,487,344.63
  5. Step 5: Solve for x
    x = 2,370,487,344.63/71,899.64
  6. Step 6: Final answer
    x = 32,969.39

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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.