Finding the Fourth Proportional to 91,004,030.70, 136,506,046.05 and 39,985,694.70
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Solution
The fourth proportional to 91,004,030.70, 136,506,046.05 and 39,985,694.70 is: 59,978,542.05
Step by Step Solution
- Step 1: Write the proportion equation
91,004,030.70 : 136,506,046.05 = 39,985,694.70 : x - Step 2: Convert to fraction form
91,004,030.70/136,506,046.05 = 39,985,694.70/x - Step 3: Cross multiply
91,004,030.70x = 136,506,046.05 × 39,985,694.70 - Step 4: Simplify right side
91,004,030.70x = 5,458,289,082,059,442 - Step 5: Solve for x
x = 5,458,289,082,059,442/91,004,030.70 - Step 6: Final answer
x = 59,978,542.05
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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.