Finding the Fourth Proportional to 112,706.75, 155,540.18 and 62,405.75
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Solution
The fourth proportional to 112,706.75, 155,540.18 and 62,405.75 is: 86,122.63
Step by Step Solution
- Step 1: Write the proportion equation
112,706.75 : 155,540.18 = 62,405.75 : x - Step 2: Convert to fraction form
112,706.75/155,540.18 = 62,405.75/x - Step 3: Cross multiply
112,706.75x = 155,540.18 × 62,405.75 - Step 4: Simplify right side
112,706.75x = 9,706,601,588.04 - Step 5: Solve for x
x = 9,706,601,588.04/112,706.75 - Step 6: Final answer
x = 86,122.63
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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.