Finding the Fourth Proportional to 79,360.76, 109,518.68 and 43,553.09
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Solution
The fourth proportional to 79,360.76, 109,518.68 and 43,553.09 is: 60,103.72
Step by Step Solution
- Step 1: Write the proportion equation
79,360.76 : 109,518.68 = 43,553.09 : x - Step 2: Convert to fraction form
79,360.76/109,518.68 = 43,553.09/x - Step 3: Cross multiply
79,360.76x = 109,518.68 × 43,553.09 - Step 4: Simplify right side
79,360.76x = 4,769,876,708.96 - Step 5: Solve for x
x = 4,769,876,708.96/79,360.76 - Step 6: Final answer
x = 60,103.72
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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.