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Finding the Fourth Proportional to 68,186.52, 94,066.93 and 39,879.72

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Solution

The fourth proportional to 68,186.52, 94,066.93 and 39,879.72 is: 55,016.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,186.52 : 94,066.93 = 39,879.72 : x
  2. Step 2: Convert to fraction form
    68,186.52/94,066.93 = 39,879.72/x
  3. Step 3: Cross multiply
    68,186.52x = 94,066.93 × 39,879.72
  4. Step 4: Simplify right side
    68,186.52x = 3,751,362,159.93
  5. Step 5: Solve for x
    x = 3,751,362,159.93/68,186.52
  6. Step 6: Final answer
    x = 55,016.19

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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.