Finding the Fourth Proportional to 92,566.71, 138,791.73 and 78,531.63
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Solution
The fourth proportional to 92,566.71, 138,791.73 and 78,531.63 is: 117,747.95
Step by Step Solution
- Step 1: Write the proportion equation
92,566.71 : 138,791.73 = 78,531.63 : x - Step 2: Convert to fraction form
92,566.71/138,791.73 = 78,531.63/x - Step 3: Cross multiply
92,566.71x = 138,791.73 × 78,531.63 - Step 4: Simplify right side
92,566.71x = 10,899,540,787.42 - Step 5: Solve for x
x = 10,899,540,787.42/92,566.71 - Step 6: Final answer
x = 117,747.95
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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.