Finding the Fourth Proportional to 87,338.64, 120,431.94 and 58,995.12
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Solution
The fourth proportional to 87,338.64, 120,431.94 and 58,995.12 is: 81,348.84
Step by Step Solution
- Step 1: Write the proportion equation
87,338.64 : 120,431.94 = 58,995.12 : x - Step 2: Convert to fraction form
87,338.64/120,431.94 = 58,995.12/x - Step 3: Cross multiply
87,338.64x = 120,431.94 × 58,995.12 - Step 4: Simplify right side
87,338.64x = 7,104,896,752.13 - Step 5: Solve for x
x = 7,104,896,752.13/87,338.64 - Step 6: Final answer
x = 81,348.84
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.