Finding the Fourth Proportional to 86,206.28, 129,318.44 and 23,876.80
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Solution
The fourth proportional to 86,206.28, 129,318.44 and 23,876.80 is: 35,817.70
Step by Step Solution
- Step 1: Write the proportion equation
86,206.28 : 129,318.44 = 23,876.80 : x - Step 2: Convert to fraction form
86,206.28/129,318.44 = 23,876.80/x - Step 3: Cross multiply
86,206.28x = 129,318.44 × 23,876.80 - Step 4: Simplify right side
86,206.28x = 3,087,710,528.19 - Step 5: Solve for x
x = 3,087,710,528.19/86,206.28 - Step 6: Final answer
x = 35,817.70
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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.