Finding the Fourth Proportional to 84,318.20, 126,539.64 and 39,945.08
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Solution
The fourth proportional to 84,318.20, 126,539.64 and 39,945.08 is: 59,947.15
Step by Step Solution
- Step 1: Write the proportion equation
84,318.20 : 126,539.64 = 39,945.08 : x - Step 2: Convert to fraction form
84,318.20/126,539.64 = 39,945.08/x - Step 3: Cross multiply
84,318.20x = 126,539.64 × 39,945.08 - Step 4: Simplify right side
84,318.20x = 5,054,636,042.97 - Step 5: Solve for x
x = 5,054,636,042.97/84,318.20 - Step 6: Final answer
x = 59,947.15
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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.