Finding the Fourth Proportional to 87,961.58, 121,386.50 and 47,674.91
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Solution
The fourth proportional to 87,961.58, 121,386.50 and 47,674.91 is: 65,791.12
Step by Step Solution
- Step 1: Write the proportion equation
87,961.58 : 121,386.50 = 47,674.91 : x - Step 2: Convert to fraction form
87,961.58/121,386.50 = 47,674.91/x - Step 3: Cross multiply
87,961.58x = 121,386.50 × 47,674.91 - Step 4: Simplify right side
87,961.58x = 5,787,090,706.59 - Step 5: Solve for x
x = 5,787,090,706.59/87,961.58 - Step 6: Final answer
x = 65,791.12
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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.