Finding the Fourth Proportional to 87,145.74, 120,263.50 and 48,907.62
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Solution
The fourth proportional to 87,145.74, 120,263.50 and 48,907.62 is: 67,493.85
Step by Step Solution
- Step 1: Write the proportion equation
87,145.74 : 120,263.50 = 48,907.62 : x - Step 2: Convert to fraction form
87,145.74/120,263.50 = 48,907.62/x - Step 3: Cross multiply
87,145.74x = 120,263.50 × 48,907.62 - Step 4: Simplify right side
87,145.74x = 5,881,801,557.87 - Step 5: Solve for x
x = 5,881,801,557.87/87,145.74 - Step 6: Final answer
x = 67,493.85
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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.