Finding the Fourth Proportional to 128,528.75, 192,739.91 and 48,553.07
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Solution
The fourth proportional to 128,528.75, 192,739.91 and 48,553.07 is: 72,809.51
Step by Step Solution
- Step 1: Write the proportion equation
128,528.75 : 192,739.91 = 48,553.07 : x - Step 2: Convert to fraction form
128,528.75/192,739.91 = 48,553.07/x - Step 3: Cross multiply
128,528.75x = 192,739.91 × 48,553.07 - Step 4: Simplify right side
128,528.75x = 9,358,114,581.11 - Step 5: Solve for x
x = 9,358,114,581.11/128,528.75 - Step 6: Final answer
x = 72,809.51
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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.