Finding the Fourth Proportional to 85,634.56, 128,452.80 and 38,252.08
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Solution
The fourth proportional to 85,634.56, 128,452.80 and 38,252.08 is: 57,378.55
Step by Step Solution
- Step 1: Write the proportion equation
85,634.56 : 128,452.80 = 38,252.08 : x - Step 2: Convert to fraction form
85,634.56/128,452.80 = 38,252.08/x - Step 3: Cross multiply
85,634.56x = 128,452.80 × 38,252.08 - Step 4: Simplify right side
85,634.56x = 4,913,586,781.82 - Step 5: Solve for x
x = 4,913,586,781.82/85,634.56 - Step 6: Final answer
x = 57,378.55
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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.