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Finding the Fourth Proportional to 54,212.99, 74,813.99 and 30,345.35

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Solution

The fourth proportional to 54,212.99, 74,813.99 and 30,345.35 is: 41,876.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,212.99 : 74,813.99 = 30,345.35 : x
  2. Step 2: Convert to fraction form
    54,212.99/74,813.99 = 30,345.35/x
  3. Step 3: Cross multiply
    54,212.99x = 74,813.99 × 30,345.35
  4. Step 4: Simplify right side
    54,212.99x = 2,270,256,185.65
  5. Step 5: Solve for x
    x = 2,270,256,185.65/54,212.99
  6. Step 6: Final answer
    x = 41,876.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.