Finding the Fourth Proportional to 76,766.37, 115,149.55 and 29,986.44
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Solution
The fourth proportional to 76,766.37, 115,149.55 and 29,986.44 is: 44,979.66
Step by Step Solution
- Step 1: Write the proportion equation
76,766.37 : 115,149.55 = 29,986.44 : x - Step 2: Convert to fraction form
76,766.37/115,149.55 = 29,986.44/x - Step 3: Cross multiply
76,766.37x = 115,149.55 × 29,986.44 - Step 4: Simplify right side
76,766.37x = 3,452,925,072.10 - Step 5: Solve for x
x = 3,452,925,072.10/76,766.37 - Step 6: Final answer
x = 44,979.66
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Similar ratio
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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.