Finding the Fourth Proportional to 74,423.70, 102,704.28 and 40,431.90
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Solution
The fourth proportional to 74,423.70, 102,704.28 and 40,431.90 is: 55,795.79
Step by Step Solution
- Step 1: Write the proportion equation
74,423.70 : 102,704.28 = 40,431.90 : x - Step 2: Convert to fraction form
74,423.70/102,704.28 = 40,431.90/x - Step 3: Cross multiply
74,423.70x = 102,704.28 × 40,431.90 - Step 4: Simplify right side
74,423.70x = 4,152,529,178.53 - Step 5: Solve for x
x = 4,152,529,178.53/74,423.70 - Step 6: Final answer
x = 55,795.79
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.