Finding the Fourth Proportional to 85,670.84, 118,221.72 and 47,427.68
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Solution
The fourth proportional to 85,670.84, 118,221.72 and 47,427.68 is: 65,447.96
Step by Step Solution
- Step 1: Write the proportion equation
85,670.84 : 118,221.72 = 47,427.68 : x - Step 2: Convert to fraction form
85,670.84/118,221.72 = 47,427.68/x - Step 3: Cross multiply
85,670.84x = 118,221.72 × 47,427.68 - Step 4: Simplify right side
85,670.84x = 5,606,981,905.21 - Step 5: Solve for x
x = 5,606,981,905.21/85,670.84 - Step 6: Final answer
x = 65,447.96
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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.