Finding the Fourth Proportional to 75,133.63, 103,684.56 and 40,678.70
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Solution
The fourth proportional to 75,133.63, 103,684.56 and 40,678.70 is: 56,136.69
Step by Step Solution
- Step 1: Write the proportion equation
75,133.63 : 103,684.56 = 40,678.70 : x - Step 2: Convert to fraction form
75,133.63/103,684.56 = 40,678.70/x - Step 3: Cross multiply
75,133.63x = 103,684.56 × 40,678.70 - Step 4: Simplify right side
75,133.63x = 4,217,753,110.87 - Step 5: Solve for x
x = 4,217,753,110.87/75,133.63 - Step 6: Final answer
x = 56,136.69
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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.