Finding the Fourth Proportional to 79,940.28, 119,988.18 and 38,416.44
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Solution
The fourth proportional to 79,940.28, 119,988.18 and 38,416.44 is: 57,662.03
Step by Step Solution
- Step 1: Write the proportion equation
79,940.28 : 119,988.18 = 38,416.44 : x - Step 2: Convert to fraction form
79,940.28/119,988.18 = 38,416.44/x - Step 3: Cross multiply
79,940.28x = 119,988.18 × 38,416.44 - Step 4: Simplify right side
79,940.28x = 4,609,518,717.68 - Step 5: Solve for x
x = 4,609,518,717.68/79,940.28 - Step 6: Final answer
x = 57,662.03
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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.