Finding the Fourth Proportional to 97,872.96, 135,060.17 and 55,431.80
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Solution
The fourth proportional to 97,872.96, 135,060.17 and 55,431.80 is: 76,493.32
Step by Step Solution
- Step 1: Write the proportion equation
97,872.96 : 135,060.17 = 55,431.80 : x - Step 2: Convert to fraction form
97,872.96/135,060.17 = 55,431.80/x - Step 3: Cross multiply
97,872.96x = 135,060.17 × 55,431.80 - Step 4: Simplify right side
97,872.96x = 7,486,627,378.95 - Step 5: Solve for x
x = 7,486,627,378.95/97,872.96 - Step 6: Final answer
x = 76,493.32
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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.