Home / 54,424.69-81,621.57-21,137.65

Finding the Fourth Proportional to 54,424.69, 81,621.57 and 21,137.65

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Solution

The fourth proportional to 54,424.69, 81,621.57 and 21,137.65 is: 31,700.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,424.69 : 81,621.57 = 21,137.65 : x
  2. Step 2: Convert to fraction form
    54,424.69/81,621.57 = 21,137.65/x
  3. Step 3: Cross multiply
    54,424.69x = 81,621.57 × 21,137.65
  4. Step 4: Simplify right side
    54,424.69x = 1,725,288,179.11
  5. Step 5: Solve for x
    x = 1,725,288,179.11/54,424.69
  6. Step 6: Final answer
    x = 31,700.47

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1.5x scale

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.