Finding the Fourth Proportional to 78,235.42, 117,310.74 and 27,609.07
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Solution
The fourth proportional to 78,235.42, 117,310.74 and 27,609.07 is: 41,398.65
Step by Step Solution
- Step 1: Write the proportion equation
78,235.42 : 117,310.74 = 27,609.07 : x - Step 2: Convert to fraction form
78,235.42/117,310.74 = 27,609.07/x - Step 3: Cross multiply
78,235.42x = 117,310.74 × 27,609.07 - Step 4: Simplify right side
78,235.42x = 3,238,840,432.41 - Step 5: Solve for x
x = 3,238,840,432.41/78,235.42 - Step 6: Final answer
x = 41,398.65
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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.