Finding the Fourth Proportional to 74,563.66, 102,900.69 and 42,738.70
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Solution
The fourth proportional to 74,563.66, 102,900.69 and 42,738.70 is: 58,981.03
Step by Step Solution
- Step 1: Write the proportion equation
74,563.66 : 102,900.69 = 42,738.70 : x - Step 2: Convert to fraction form
74,563.66/102,900.69 = 42,738.70/x - Step 3: Cross multiply
74,563.66x = 102,900.69 × 42,738.70 - Step 4: Simplify right side
74,563.66x = 4,397,841,719.70 - Step 5: Solve for x
x = 4,397,841,719.70/74,563.66 - Step 6: Final answer
x = 58,981.03
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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.