Finding the Fourth Proportional to 85,917.68, 118,296.96 and 78,044.48
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Solution
The fourth proportional to 85,917.68, 118,296.96 and 78,044.48 is: 107,456.63
Step by Step Solution
- Step 1: Write the proportion equation
85,917.68 : 118,296.96 = 78,044.48 : x - Step 2: Convert to fraction form
85,917.68/118,296.96 = 78,044.48/x - Step 3: Cross multiply
85,917.68x = 118,296.96 × 78,044.48 - Step 4: Simplify right side
85,917.68x = 9,232,424,728.78 - Step 5: Solve for x
x = 9,232,424,728.78/85,917.68 - Step 6: Final answer
x = 107,456.63
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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.