Finding the Fourth Proportional to 81,591.79, 122,422.76 and 44,178.59
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Solution
The fourth proportional to 81,591.79, 122,422.76 and 44,178.59 is: 66,286.88
Step by Step Solution
- Step 1: Write the proportion equation
81,591.79 : 122,422.76 = 44,178.59 : x - Step 2: Convert to fraction form
81,591.79/122,422.76 = 44,178.59/x - Step 3: Cross multiply
81,591.79x = 122,422.76 × 44,178.59 - Step 4: Simplify right side
81,591.79x = 5,408,464,920.71 - Step 5: Solve for x
x = 5,408,464,920.71/81,591.79 - Step 6: Final answer
x = 66,286.88
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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.