Finding the Fourth Proportional to 87,889.24, 121,287.13 and 47,602.68
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Solution
The fourth proportional to 87,889.24, 121,287.13 and 47,602.68 is: 65,691.69
Step by Step Solution
- Step 1: Write the proportion equation
87,889.24 : 121,287.13 = 47,602.68 : x - Step 2: Convert to fraction form
87,889.24/121,287.13 = 47,602.68/x - Step 3: Cross multiply
87,889.24x = 121,287.13 × 47,602.68 - Step 4: Simplify right side
87,889.24x = 5,773,592,437.51 - Step 5: Solve for x
x = 5,773,592,437.51/87,889.24 - Step 6: Final answer
x = 65,691.69
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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.