Finding the Fourth Proportional to 86,969.09, 130,461.84 and 27,790.70
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Solution
The fourth proportional to 86,969.09, 130,461.84 and 27,790.70 is: 41,688.66
Step by Step Solution
- Step 1: Write the proportion equation
86,969.09 : 130,461.84 = 27,790.70 : x - Step 2: Convert to fraction form
86,969.09/130,461.84 = 27,790.70/x - Step 3: Cross multiply
86,969.09x = 130,461.84 × 27,790.70 - Step 4: Simplify right side
86,969.09x = 3,625,625,204.58 - Step 5: Solve for x
x = 3,625,625,204.58/86,969.09 - Step 6: Final answer
x = 41,688.66
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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.