Finding the Fourth Proportional to 78,520.08, 117,781.08 and 43,528.08
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Solution
The fourth proportional to 78,520.08, 117,781.08 and 43,528.08 is: 65,292.65
Step by Step Solution
- Step 1: Write the proportion equation
78,520.08 : 117,781.08 = 43,528.08 : x - Step 2: Convert to fraction form
78,520.08/117,781.08 = 43,528.08/x - Step 3: Cross multiply
78,520.08x = 117,781.08 × 43,528.08 - Step 4: Simplify right side
78,520.08x = 5,126,784,272.73 - Step 5: Solve for x
x = 5,126,784,272.73/78,520.08 - Step 6: Final answer
x = 65,292.65
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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.