Finding the Fourth Proportional to 77,057.92, 106,427.68 and 51,863.68
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Solution
The fourth proportional to 77,057.92, 106,427.68 and 51,863.68 is: 71,630.94
Step by Step Solution
- Step 1: Write the proportion equation
77,057.92 : 106,427.68 = 51,863.68 : x - Step 2: Convert to fraction form
77,057.92/106,427.68 = 51,863.68/x - Step 3: Cross multiply
77,057.92x = 106,427.68 × 51,863.68 - Step 4: Simplify right side
77,057.92x = 5,519,731,138.66 - Step 5: Solve for x
x = 5,519,731,138.66/77,057.92 - Step 6: Final answer
x = 71,630.94
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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.