Finding the Fourth Proportional to 79,589.36, 109,836.12 and 43,782.08
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Solution
The fourth proportional to 79,589.36, 109,836.12 and 43,782.08 is: 60,420.81
Step by Step Solution
- Step 1: Write the proportion equation
79,589.36 : 109,836.12 = 43,782.08 : x - Step 2: Convert to fraction form
79,589.36/109,836.12 = 43,782.08/x - Step 3: Cross multiply
79,589.36x = 109,836.12 × 43,782.08 - Step 4: Simplify right side
79,589.36x = 4,808,853,792.73 - Step 5: Solve for x
x = 4,808,853,792.73/79,589.36 - Step 6: Final answer
x = 60,420.81
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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.