Finding the Fourth Proportional to 85,734.21, 118,370.99 and 53,517.92
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Solution
The fourth proportional to 85,734.21, 118,370.99 and 53,517.92 is: 73,890.80
Step by Step Solution
- Step 1: Write the proportion equation
85,734.21 : 118,370.99 = 53,517.92 : x - Step 2: Convert to fraction form
85,734.21/118,370.99 = 53,517.92/x - Step 3: Cross multiply
85,734.21x = 118,370.99 × 53,517.92 - Step 4: Simplify right side
85,734.21x = 6,334,969,602.86 - Step 5: Solve for x
x = 6,334,969,602.86/85,734.21 - Step 6: Final answer
x = 73,890.80
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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.