Finding the Fourth Proportional to 81,194.28, 121,779.86 and 27,885.38
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Solution
The fourth proportional to 81,194.28, 121,779.86 and 27,885.38 is: 41,824.09
Step by Step Solution
- Step 1: Write the proportion equation
81,194.28 : 121,779.86 = 27,885.38 : x - Step 2: Convert to fraction form
81,194.28/121,779.86 = 27,885.38/x - Step 3: Cross multiply
81,194.28x = 121,779.86 × 27,885.38 - Step 4: Simplify right side
81,194.28x = 3,395,876,924.12 - Step 5: Solve for x
x = 3,395,876,924.12/81,194.28 - Step 6: Final answer
x = 41,824.09
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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.