Finding the Fourth Proportional to 74,872.05, 112,211.12 and 30,447.19
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Solution
The fourth proportional to 74,872.05, 112,211.12 and 30,447.19 is: 45,631.36
Step by Step Solution
- Step 1: Write the proportion equation
74,872.05 : 112,211.12 = 30,447.19 : x - Step 2: Convert to fraction form
74,872.05/112,211.12 = 30,447.19/x - Step 3: Cross multiply
74,872.05x = 112,211.12 × 30,447.19 - Step 4: Simplify right side
74,872.05x = 3,416,513,507.13 - Step 5: Solve for x
x = 3,416,513,507.13/74,872.05 - Step 6: Final answer
x = 45,631.36
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.