Finding the Fourth Proportional to 85,713.69, 128,578.99 and 29,546.41
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Solution
The fourth proportional to 85,713.69, 128,578.99 and 29,546.41 is: 44,322.52
Step by Step Solution
- Step 1: Write the proportion equation
85,713.69 : 128,578.99 = 29,546.41 : x - Step 2: Convert to fraction form
85,713.69/128,578.99 = 29,546.41/x - Step 3: Cross multiply
85,713.69x = 128,578.99 × 29,546.41 - Step 4: Simplify right side
85,713.69x = 3,799,046,913.03 - Step 5: Solve for x
x = 3,799,046,913.03/85,713.69 - Step 6: Final answer
x = 44,322.52
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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.