Finding the Fourth Proportional to 86,102.62, 118,820.80 and 47,861.16
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Solution
The fourth proportional to 86,102.62, 118,820.80 and 47,861.16 is: 66,047.95
Step by Step Solution
- Step 1: Write the proportion equation
86,102.62 : 118,820.80 = 47,861.16 : x - Step 2: Convert to fraction form
86,102.62/118,820.80 = 47,861.16/x - Step 3: Cross multiply
86,102.62x = 118,820.80 × 47,861.16 - Step 4: Simplify right side
86,102.62x = 5,686,901,320.13 - Step 5: Solve for x
x = 5,686,901,320.13/86,102.62 - Step 6: Final answer
x = 66,047.95
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.