Finding the Fourth Proportional to 79,161.84, 109,243.48 and 42,863.68
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Solution
The fourth proportional to 79,161.84, 109,243.48 and 42,863.68 is: 59,151.95
Step by Step Solution
- Step 1: Write the proportion equation
79,161.84 : 109,243.48 = 42,863.68 : x - Step 2: Convert to fraction form
79,161.84/109,243.48 = 42,863.68/x - Step 3: Cross multiply
79,161.84x = 109,243.48 × 42,863.68 - Step 4: Simplify right side
79,161.84x = 4,682,577,568.81 - Step 5: Solve for x
x = 4,682,577,568.81/79,161.84 - Step 6: Final answer
x = 59,151.95
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1.5x scale
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.