Home / 54,445.65-81,629.87-21,137.64

Finding the Fourth Proportional to 54,445.65, 81,629.87 and 21,137.64

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Solution

The fourth proportional to 54,445.65, 81,629.87 and 21,137.64 is: 31,691.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,445.65 : 81,629.87 = 21,137.64 : x
  2. Step 2: Convert to fraction form
    54,445.65/81,629.87 = 21,137.64/x
  3. Step 3: Cross multiply
    54,445.65x = 81,629.87 × 21,137.64
  4. Step 4: Simplify right side
    54,445.65x = 1,725,462,699.62
  5. Step 5: Solve for x
    x = 1,725,462,699.62/54,445.65
  6. Step 6: Final answer
    x = 31,691.47

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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.