Finding the Fourth Proportional to 86,197.28, 118,953.68 and 47,959.84
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Solution
The fourth proportional to 86,197.28, 118,953.68 and 47,959.84 is: 66,185.38
Step by Step Solution
- Step 1: Write the proportion equation
86,197.28 : 118,953.68 = 47,959.84 : x - Step 2: Convert to fraction form
86,197.28/118,953.68 = 47,959.84/x - Step 3: Cross multiply
86,197.28x = 118,953.68 × 47,959.84 - Step 4: Simplify right side
86,197.28x = 5,704,999,460.21 - Step 5: Solve for x
x = 5,704,999,460.21/86,197.28 - Step 6: Final answer
x = 66,185.38
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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.