Finding the Fourth Proportional to 98,778.97, 136,313.94 and 53,455.96
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Solution
The fourth proportional to 98,778.97, 136,313.94 and 53,455.96 is: 73,768.66
Step by Step Solution
- Step 1: Write the proportion equation
98,778.97 : 136,313.94 = 53,455.96 : x - Step 2: Convert to fraction form
98,778.97/136,313.94 = 53,455.96/x - Step 3: Cross multiply
98,778.97x = 136,313.94 × 53,455.96 - Step 4: Simplify right side
98,778.97x = 7,286,792,524.08 - Step 5: Solve for x
x = 7,286,792,524.08/98,778.97 - Step 6: Final answer
x = 73,768.66
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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.