Finding the Fourth Proportional to 81,949.55, 122,933.84 and 28,625.02
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Solution
The fourth proportional to 81,949.55, 122,933.84 and 28,625.02 is: 42,940.85
Step by Step Solution
- Step 1: Write the proportion equation
81,949.55 : 122,933.84 = 28,625.02 : x - Step 2: Convert to fraction form
81,949.55/122,933.84 = 28,625.02/x - Step 3: Cross multiply
81,949.55x = 122,933.84 × 28,625.02 - Step 4: Simplify right side
81,949.55x = 3,518,983,178.22 - Step 5: Solve for x
x = 3,518,983,178.22/81,949.55 - Step 6: Final answer
x = 42,940.85
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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.