Finding the Fourth Proportional to 78,979.89, 118,454.04 and 29,042.99
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Solution
The fourth proportional to 78,979.89, 118,454.04 and 29,042.99 is: 43,558.67
Step by Step Solution
- Step 1: Write the proportion equation
78,979.89 : 118,454.04 = 29,042.99 : x - Step 2: Convert to fraction form
78,979.89/118,454.04 = 29,042.99/x - Step 3: Cross multiply
78,979.89x = 118,454.04 × 29,042.99 - Step 4: Simplify right side
78,979.89x = 3,440,258,906.91 - Step 5: Solve for x
x = 3,440,258,906.91/78,979.89 - Step 6: Final answer
x = 43,558.67
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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.