Finding the Fourth Proportional to 85,861.96, 118,548.16 and 53,645.63
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Solution
The fourth proportional to 85,861.96, 118,548.16 and 53,645.63 is: 74,067.61
Step by Step Solution
- Step 1: Write the proportion equation
85,861.96 : 118,548.16 = 53,645.63 : x - Step 2: Convert to fraction form
85,861.96/118,548.16 = 53,645.63/x - Step 3: Cross multiply
85,861.96x = 118,548.16 × 53,645.63 - Step 4: Simplify right side
85,861.96x = 6,359,590,501.81 - Step 5: Solve for x
x = 6,359,590,501.81/85,861.96 - Step 6: Final answer
x = 74,067.61
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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.