Finding the Fourth Proportional to 86,130.40, 129,047.97 and 68,415.70
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Solution
The fourth proportional to 86,130.40, 129,047.97 and 68,415.70 is: 102,506.28
Step by Step Solution
- Step 1: Write the proportion equation
86,130.40 : 129,047.97 = 68,415.70 : x - Step 2: Convert to fraction form
86,130.40/129,047.97 = 68,415.70/x - Step 3: Cross multiply
86,130.40x = 129,047.97 × 68,415.70 - Step 4: Simplify right side
86,130.40x = 8,828,907,201.13 - Step 5: Solve for x
x = 8,828,907,201.13/86,130.40 - Step 6: Final answer
x = 102,506.28
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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.