Finding the Fourth Proportional to 85,654.09, 128,489.69 and 29,486.76
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Solution
The fourth proportional to 85,654.09, 128,489.69 and 29,486.76 is: 44,233.09
Step by Step Solution
- Step 1: Write the proportion equation
85,654.09 : 128,489.69 = 29,486.76 : x - Step 2: Convert to fraction form
85,654.09/128,489.69 = 29,486.76/x - Step 3: Cross multiply
85,654.09x = 128,489.69 × 29,486.76 - Step 4: Simplify right side
85,654.09x = 3,788,744,651.50 - Step 5: Solve for x
x = 3,788,744,651.50/85,654.09 - Step 6: Final answer
x = 44,233.09
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.