Finding the Fourth Proportional to 74,715.21, 103,106.34 and 40,723.70
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Solution
The fourth proportional to 74,715.21, 103,106.34 and 40,723.70 is: 56,198.35
Step by Step Solution
- Step 1: Write the proportion equation
74,715.21 : 103,106.34 = 40,723.70 : x - Step 2: Convert to fraction form
74,715.21/103,106.34 = 40,723.70/x - Step 3: Cross multiply
74,715.21x = 103,106.34 × 40,723.70 - Step 4: Simplify right side
74,715.21x = 4,198,871,454.64 - Step 5: Solve for x
x = 4,198,871,454.64/74,715.21 - Step 6: Final answer
x = 56,198.35
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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.