Finding the Fourth Proportional to 76,701.25, 115,121.67 and 39,287.08
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Solution
The fourth proportional to 76,701.25, 115,121.67 and 39,287.08 is: 58,966.37
Step by Step Solution
- Step 1: Write the proportion equation
76,701.25 : 115,121.67 = 39,287.08 : x - Step 2: Convert to fraction form
76,701.25/115,121.67 = 39,287.08/x - Step 3: Cross multiply
76,701.25x = 115,121.67 × 39,287.08 - Step 4: Simplify right side
76,701.25x = 4,522,794,259.02 - Step 5: Solve for x
x = 4,522,794,259.02/76,701.25 - Step 6: Final answer
x = 58,966.37
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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.