Finding the Fourth Proportional to 72,958.42, 100,682.62 and 39,424.42
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Solution
The fourth proportional to 72,958.42, 100,682.62 and 39,424.42 is: 54,405.70
Step by Step Solution
- Step 1: Write the proportion equation
72,958.42 : 100,682.62 = 39,424.42 : x - Step 2: Convert to fraction form
72,958.42/100,682.62 = 39,424.42/x - Step 3: Cross multiply
72,958.42x = 100,682.62 × 39,424.42 - Step 4: Simplify right side
72,958.42x = 3,969,353,897.58 - Step 5: Solve for x
x = 3,969,353,897.58/72,958.42 - Step 6: Final answer
x = 54,405.70
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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.