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Finding the Fourth Proportional to 54,078.74, 74,628.22 and 29,879.63

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Solution

The fourth proportional to 54,078.74, 74,628.22 and 29,879.63 is: 41,233.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,078.74 : 74,628.22 = 29,879.63 : x
  2. Step 2: Convert to fraction form
    54,078.74/74,628.22 = 29,879.63/x
  3. Step 3: Cross multiply
    54,078.74x = 74,628.22 × 29,879.63
  4. Step 4: Simplify right side
    54,078.74x = 2,229,863,153.32
  5. Step 5: Solve for x
    x = 2,229,863,153.32/54,078.74
  6. Step 6: Final answer
    x = 41,233.64

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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.