Finding the Fourth Proportional to 87,394.75, 120,557.46 and 72,197.53
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Solution
The fourth proportional to 87,394.75, 120,557.46 and 72,197.53 is: 99,593.52
Step by Step Solution
- Step 1: Write the proportion equation
87,394.75 : 120,557.46 = 72,197.53 : x - Step 2: Convert to fraction form
87,394.75/120,557.46 = 72,197.53/x - Step 3: Cross multiply
87,394.75x = 120,557.46 × 72,197.53 - Step 4: Simplify right side
87,394.75x = 8,703,950,804.42 - Step 5: Solve for x
x = 8,703,950,804.42/87,394.75 - Step 6: Final answer
x = 99,593.52
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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.