Finding the Fourth Proportional to 79,128.27, 118,683.18 and 19,964.43
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Solution
The fourth proportional to 79,128.27, 118,683.18 and 19,964.43 is: 29,944.32
Step by Step Solution
- Step 1: Write the proportion equation
79,128.27 : 118,683.18 = 19,964.43 : x - Step 2: Convert to fraction form
79,128.27/118,683.18 = 19,964.43/x - Step 3: Cross multiply
79,128.27x = 118,683.18 × 19,964.43 - Step 4: Simplify right side
79,128.27x = 2,369,442,039.29 - Step 5: Solve for x
x = 2,369,442,039.29/79,128.27 - Step 6: Final answer
x = 29,944.32
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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.