Finding the Fourth Proportional to 86,386.44, 129,359.34 and 68,881.80
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Solution
The fourth proportional to 86,386.44, 129,359.34 and 68,881.80 is: 103,147.02
Step by Step Solution
- Step 1: Write the proportion equation
86,386.44 : 129,359.34 = 68,881.80 : x - Step 2: Convert to fraction form
86,386.44/129,359.34 = 68,881.80/x - Step 3: Cross multiply
86,386.44x = 129,359.34 × 68,881.80 - Step 4: Simplify right side
86,386.44x = 8,910,504,186.01 - Step 5: Solve for x
x = 8,910,504,186.01/86,386.44 - Step 6: Final answer
x = 103,147.02
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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.