Finding the Fourth Proportional to 128,528.80, 192,663.60 and 58,458.40
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Solution
The fourth proportional to 128,528.80, 192,663.60 and 58,458.40 is: 87,628.65
Step by Step Solution
- Step 1: Write the proportion equation
128,528.80 : 192,663.60 = 58,458.40 : x - Step 2: Convert to fraction form
128,528.80/192,663.60 = 58,458.40/x - Step 3: Cross multiply
128,528.80x = 192,663.60 × 58,458.40 - Step 4: Simplify right side
128,528.80x = 11,262,805,794.24 - Step 5: Solve for x
x = 11,262,805,794.24/128,528.80 - Step 6: Final answer
x = 87,628.65
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.