Finding the Fourth Proportional to 84,963.36, 117,215.76 and 49,146.72
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Solution
The fourth proportional to 84,963.36, 117,215.76 and 49,146.72 is: 67,802.99
Step by Step Solution
- Step 1: Write the proportion equation
84,963.36 : 117,215.76 = 49,146.72 : x - Step 2: Convert to fraction form
84,963.36/117,215.76 = 49,146.72/x - Step 3: Cross multiply
84,963.36x = 117,215.76 × 49,146.72 - Step 4: Simplify right side
84,963.36x = 5,760,770,136.31 - Step 5: Solve for x
x = 5,760,770,136.31/84,963.36 - Step 6: Final answer
x = 67,802.99
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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.