Finding the Fourth Proportional to 85,145.01, 127,717.52 and 25,980.99
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Solution
The fourth proportional to 85,145.01, 127,717.52 and 25,980.99 is: 38,971.49
Step by Step Solution
- Step 1: Write the proportion equation
85,145.01 : 127,717.52 = 25,980.99 : x - Step 2: Convert to fraction form
85,145.01/127,717.52 = 25,980.99/x - Step 3: Cross multiply
85,145.01x = 127,717.52 × 25,980.99 - Step 4: Simplify right side
85,145.01x = 3,318,227,480.04 - Step 5: Solve for x
x = 3,318,227,480.04/85,145.01 - Step 6: Final answer
x = 38,971.49
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Double scale
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Similar ratio
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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.