Finding the Fourth Proportional to 85,293.99, 127,781.04 and 71,343.66
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Solution
The fourth proportional to 85,293.99, 127,781.04 and 71,343.66 is: 106,881.70
Step by Step Solution
- Step 1: Write the proportion equation
85,293.99 : 127,781.04 = 71,343.66 : x - Step 2: Convert to fraction form
85,293.99/127,781.04 = 71,343.66/x - Step 3: Cross multiply
85,293.99x = 127,781.04 × 71,343.66 - Step 4: Simplify right side
85,293.99x = 9,116,367,072.21 - Step 5: Solve for x
x = 9,116,367,072.21/85,293.99 - Step 6: Final answer
x = 106,881.70
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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.