Finding the Fourth Proportional to 74,228.20, 102,441.39 and 40,700.68
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Solution
The fourth proportional to 74,228.20, 102,441.39 and 40,700.68 is: 56,170.49
Step by Step Solution
- Step 1: Write the proportion equation
74,228.20 : 102,441.39 = 40,700.68 : x - Step 2: Convert to fraction form
74,228.20/102,441.39 = 40,700.68/x - Step 3: Cross multiply
74,228.20x = 102,441.39 × 40,700.68 - Step 4: Simplify right side
74,228.20x = 4,169,433,720.94 - Step 5: Solve for x
x = 4,169,433,720.94/74,228.20 - Step 6: Final answer
x = 56,170.49
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1.5x scale
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.