Finding the Fourth Proportional to 76,716,687.76, 115,120,431.36 and 28,228,590.88
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Solution
The fourth proportional to 76,716,687.76, 115,120,431.36 and 28,228,590.88 is: 42,359,591.55
Step by Step Solution
- Step 1: Write the proportion equation
76,716,687.76 : 115,120,431.36 = 28,228,590.88 : x - Step 2: Convert to fraction form
76,716,687.76/115,120,431.36 = 28,228,590.88/x - Step 3: Cross multiply
76,716,687.76x = 115,120,431.36 × 28,228,590.88 - Step 4: Simplify right side
76,716,687.76x = 3,249,687,558,790,562 - Step 5: Solve for x
x = 3,249,687,558,790,562/76,716,687.76 - Step 6: Final answer
x = 42,359,591.55
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1.5x scale
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.