Finding the Fourth Proportional to 85,731.69, 118,309.62 and 47,491.23
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Solution
The fourth proportional to 85,731.69, 118,309.62 and 47,491.23 is: 65,537.84
Step by Step Solution
- Step 1: Write the proportion equation
85,731.69 : 118,309.62 = 47,491.23 : x - Step 2: Convert to fraction form
85,731.69/118,309.62 = 47,491.23/x - Step 3: Cross multiply
85,731.69x = 118,309.62 × 47,491.23 - Step 4: Simplify right side
85,731.69x = 5,618,669,374.63 - Step 5: Solve for x
x = 5,618,669,374.63/85,731.69 - Step 6: Final answer
x = 65,537.84
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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.