Finding the Fourth Proportional to 75,631.68, 113,447.66 and 31,209.66
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Solution
The fourth proportional to 75,631.68, 113,447.66 and 31,209.66 is: 46,814.55
Step by Step Solution
- Step 1: Write the proportion equation
75,631.68 : 113,447.66 = 31,209.66 : x - Step 2: Convert to fraction form
75,631.68/113,447.66 = 31,209.66/x - Step 3: Cross multiply
75,631.68x = 113,447.66 × 31,209.66 - Step 4: Simplify right side
75,631.68x = 3,540,662,740.35 - Step 5: Solve for x
x = 3,540,662,740.35/75,631.68 - Step 6: Final answer
x = 46,814.55
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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.