Home / 78,679.86-118,054.67-41,231.03

Finding the Fourth Proportional to 78,679.86, 118,054.67 and 41,231.03

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Solution

The fourth proportional to 78,679.86, 118,054.67 and 41,231.03 is: 61,864.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,679.86 : 118,054.67 = 41,231.03 : x
  2. Step 2: Convert to fraction form
    78,679.86/118,054.67 = 41,231.03/x
  3. Step 3: Cross multiply
    78,679.86x = 118,054.67 × 41,231.03
  4. Step 4: Simplify right side
    78,679.86x = 4,867,514,843.98
  5. Step 5: Solve for x
    x = 4,867,514,843.98/78,679.86
  6. Step 6: Final answer
    x = 61,864.82

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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.