Finding the Fourth Proportional to 79,651.80, 109,917.36 and 43,353.99
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Solution
The fourth proportional to 79,651.80, 109,917.36 and 43,353.99 is: 59,827.35
Step by Step Solution
- Step 1: Write the proportion equation
79,651.80 : 109,917.36 = 43,353.99 : x - Step 2: Convert to fraction form
79,651.80/109,917.36 = 43,353.99/x - Step 3: Cross multiply
79,651.80x = 109,917.36 × 43,353.99 - Step 4: Simplify right side
79,651.80x = 4,765,356,126.27 - Step 5: Solve for x
x = 4,765,356,126.27/79,651.80 - Step 6: Final answer
x = 59,827.35
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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.