Finding the Fourth Proportional to 86,211.36, 129,319.20 and 23,881.68
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Solution
The fourth proportional to 86,211.36, 129,319.20 and 23,881.68 is: 35,823.12
Step by Step Solution
- Step 1: Write the proportion equation
86,211.36 : 129,319.20 = 23,881.68 : x - Step 2: Convert to fraction form
86,211.36/129,319.20 = 23,881.68/x - Step 3: Cross multiply
86,211.36x = 129,319.20 × 23,881.68 - Step 4: Simplify right side
86,211.36x = 3,088,359,752.26 - Step 5: Solve for x
x = 3,088,359,752.26/86,211.36 - Step 6: Final answer
x = 35,823.12
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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.