Finding the Fourth Proportional to 85,138.12, 117,486.12 and 48,837.74
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Solution
The fourth proportional to 85,138.12, 117,486.12 and 48,837.74 is: 67,393.50
Step by Step Solution
- Step 1: Write the proportion equation
85,138.12 : 117,486.12 = 48,837.74 : x - Step 2: Convert to fraction form
85,138.12/117,486.12 = 48,837.74/x - Step 3: Cross multiply
85,138.12x = 117,486.12 × 48,837.74 - Step 4: Simplify right side
85,138.12x = 5,737,756,177.88 - Step 5: Solve for x
x = 5,737,756,177.88/85,138.12 - Step 6: Final answer
x = 67,393.50
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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.