Finding the Fourth Proportional to 91,918.36, 126,838.38 and 51,622.96
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Solution
The fourth proportional to 91,918.36, 126,838.38 and 51,622.96 is: 71,234.65
Step by Step Solution
- Step 1: Write the proportion equation
91,918.36 : 126,838.38 = 51,622.96 : x - Step 2: Convert to fraction form
91,918.36/126,838.38 = 51,622.96/x - Step 3: Cross multiply
91,918.36x = 126,838.38 × 51,622.96 - Step 4: Simplify right side
91,918.36x = 6,547,772,617.20 - Step 5: Solve for x
x = 6,547,772,617.20/91,918.36 - Step 6: Final answer
x = 71,234.65
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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.