Finding the Fourth Proportional to 74,170.20, 102,354.99 and 40,178.76
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Solution
The fourth proportional to 74,170.20, 102,354.99 and 40,178.76 is: 55,446.75
Step by Step Solution
- Step 1: Write the proportion equation
74,170.20 : 102,354.99 = 40,178.76 : x - Step 2: Convert to fraction form
74,170.20/102,354.99 = 40,178.76/x - Step 3: Cross multiply
74,170.20x = 102,354.99 × 40,178.76 - Step 4: Simplify right side
74,170.20x = 4,112,496,578.01 - Step 5: Solve for x
x = 4,112,496,578.01/74,170.20 - Step 6: Final answer
x = 55,446.75
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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.