Finding the Fourth Proportional to 71,161.01, 106,648.91 and 28,991.70
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Solution
The fourth proportional to 71,161.01, 106,648.91 and 28,991.70 is: 43,449.82
Step by Step Solution
- Step 1: Write the proportion equation
71,161.01 : 106,648.91 = 28,991.70 : x - Step 2: Convert to fraction form
71,161.01/106,648.91 = 28,991.70/x - Step 3: Cross multiply
71,161.01x = 106,648.91 × 28,991.70 - Step 4: Simplify right side
71,161.01x = 3,091,933,059.09 - Step 5: Solve for x
x = 3,091,933,059.09/71,161.01 - Step 6: Final answer
x = 43,449.82
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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.