Finding the Fourth Proportional to 91,303.86, 136,961.97 and 28,120.08
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Solution
The fourth proportional to 91,303.86, 136,961.97 and 28,120.08 is: 42,182.02
Step by Step Solution
- Step 1: Write the proportion equation
91,303.86 : 136,961.97 = 28,120.08 : x - Step 2: Convert to fraction form
91,303.86/136,961.97 = 28,120.08/x - Step 3: Cross multiply
91,303.86x = 136,961.97 × 28,120.08 - Step 4: Simplify right side
91,303.86x = 3,851,380,868.55 - Step 5: Solve for x
x = 3,851,380,868.55/91,303.86 - Step 6: Final answer
x = 42,182.02
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.