Finding the Fourth Proportional to 85,678,075.99, 128,535,550.96 and 26,589,289.42
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Solution
The fourth proportional to 85,678,075.99, 128,535,550.96 and 26,589,289.42 is: 39,889,655.85
Step by Step Solution
- Step 1: Write the proportion equation
85,678,075.99 : 128,535,550.96 = 26,589,289.42 : x - Step 2: Convert to fraction form
85,678,075.99/128,535,550.96 = 26,589,289.42/x - Step 3: Cross multiply
85,678,075.99x = 128,535,550.96 × 26,589,289.42 - Step 4: Simplify right side
85,678,075.99x = 3,417,668,965,234,599 - Step 5: Solve for x
x = 3,417,668,965,234,599/85,678,075.99 - Step 6: Final answer
x = 39,889,655.85
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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.