Finding the Fourth Proportional to 81,800.82, 122,702.76 and 25,639.67
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Solution
The fourth proportional to 81,800.82, 122,702.76 and 25,639.67 is: 38,459.99
Step by Step Solution
- Step 1: Write the proportion equation
81,800.82 : 122,702.76 = 25,639.67 : x - Step 2: Convert to fraction form
81,800.82/122,702.76 = 25,639.67/x - Step 3: Cross multiply
81,800.82x = 122,702.76 × 25,639.67 - Step 4: Simplify right side
81,800.82x = 3,146,058,581.25 - Step 5: Solve for x
x = 3,146,058,581.25/81,800.82 - Step 6: Final answer
x = 38,459.99
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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.