Finding the Fourth Proportional to 73,965.84, 102,072.72 and 40,431.84
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Solution
The fourth proportional to 73,965.84, 102,072.72 and 40,431.84 is: 55,795.86
Step by Step Solution
- Step 1: Write the proportion equation
73,965.84 : 102,072.72 = 40,431.84 : x - Step 2: Convert to fraction form
73,965.84/102,072.72 = 40,431.84/x - Step 3: Cross multiply
73,965.84x = 102,072.72 × 40,431.84 - Step 4: Simplify right side
73,965.84x = 4,126,987,883.40 - Step 5: Solve for x
x = 4,126,987,883.40/73,965.84 - Step 6: Final answer
x = 55,795.86
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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.