Finding the Fourth Proportional to 92,520.36, 138,635.16 and 71,511.84
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Solution
The fourth proportional to 92,520.36, 138,635.16 and 71,511.84 is: 107,155.39
Step by Step Solution
- Step 1: Write the proportion equation
92,520.36 : 138,635.16 = 71,511.84 : x - Step 2: Convert to fraction form
92,520.36/138,635.16 = 71,511.84/x - Step 3: Cross multiply
92,520.36x = 138,635.16 × 71,511.84 - Step 4: Simplify right side
92,520.36x = 9,914,055,380.29 - Step 5: Solve for x
x = 9,914,055,380.29/92,520.36 - Step 6: Final answer
x = 107,155.39
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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.