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Finding the Fourth Proportional to 115,255.39, 159,054.41 and 63,578.43

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Solution

The fourth proportional to 115,255.39, 159,054.41 and 63,578.43 is: 87,739.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,255.39 : 159,054.41 = 63,578.43 : x
  2. Step 2: Convert to fraction form
    115,255.39/159,054.41 = 63,578.43/x
  3. Step 3: Cross multiply
    115,255.39x = 159,054.41 × 63,578.43
  4. Step 4: Simplify right side
    115,255.39x = 10,112,428,559.21
  5. Step 5: Solve for x
    x = 10,112,428,559.21/115,255.39
  6. Step 6: Final answer
    x = 87,739.31

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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.