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Finding the Fourth Proportional to 34,716.93, 47,917.74 and 20,379.93

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Solution

The fourth proportional to 34,716.93, 47,917.74 and 20,379.93 is: 28,129.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,716.93 : 47,917.74 = 20,379.93 : x
  2. Step 2: Convert to fraction form
    34,716.93/47,917.74 = 20,379.93/x
  3. Step 3: Cross multiply
    34,716.93x = 47,917.74 × 20,379.93
  4. Step 4: Simplify right side
    34,716.93x = 976,560,186.96
  5. Step 5: Solve for x
    x = 976,560,186.96/34,716.93
  6. Step 6: Final answer
    x = 28,129.22

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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.