Finding the Fourth Proportional to 83,081.80, 124,622.70 and 74,771.20
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Solution
The fourth proportional to 83,081.80, 124,622.70 and 74,771.20 is: 112,156.80
Step by Step Solution
- Step 1: Write the proportion equation
83,081.80 : 124,622.70 = 74,771.20 : x - Step 2: Convert to fraction form
83,081.80/124,622.70 = 74,771.20/x - Step 3: Cross multiply
83,081.80x = 124,622.70 × 74,771.20 - Step 4: Simplify right side
83,081.80x = 9,318,188,826.24 - Step 5: Solve for x
x = 9,318,188,826.24/83,081.80 - Step 6: Final answer
x = 112,156.80
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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.