Finding the Fourth Proportional to 76,766.24, 115,149.37 and 29,986.31
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Solution
The fourth proportional to 76,766.24, 115,149.37 and 29,986.31 is: 44,979.47
Step by Step Solution
- Step 1: Write the proportion equation
76,766.24 : 115,149.37 = 29,986.31 : x - Step 2: Convert to fraction form
76,766.24/115,149.37 = 29,986.31/x - Step 3: Cross multiply
76,766.24x = 115,149.37 × 29,986.31 - Step 4: Simplify right side
76,766.24x = 3,452,904,843.07 - Step 5: Solve for x
x = 3,452,904,843.07/76,766.24 - Step 6: Final answer
x = 44,979.47
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1.5x scale
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.