Finding the Fourth Proportional to 75,102.77, 103,640.90 and 40,646.70
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Solution
The fourth proportional to 75,102.77, 103,640.90 and 40,646.70 is: 56,091.94
Step by Step Solution
- Step 1: Write the proportion equation
75,102.77 : 103,640.90 = 40,646.70 : x - Step 2: Convert to fraction form
75,102.77/103,640.90 = 40,646.70/x - Step 3: Cross multiply
75,102.77x = 103,640.90 × 40,646.70 - Step 4: Simplify right side
75,102.77x = 4,212,660,366.80 - Step 5: Solve for x
x = 4,212,660,366.80/75,102.77 - Step 6: Final answer
x = 56,091.94
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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.