Finding the Fourth Proportional to 128,485.91, 192,677.79 and 49,549.79
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Solution
The fourth proportional to 128,485.91, 192,677.79 and 49,549.79 is: 74,304.99
Step by Step Solution
- Step 1: Write the proportion equation
128,485.91 : 192,677.79 = 49,549.79 : x - Step 2: Convert to fraction form
128,485.91/192,677.79 = 49,549.79/x - Step 3: Cross multiply
128,485.91x = 192,677.79 × 49,549.79 - Step 4: Simplify right side
128,485.91x = 9,547,144,032.16 - Step 5: Solve for x
x = 9,547,144,032.16/128,485.91 - Step 6: Final answer
x = 74,304.99
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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.