Finding the Fourth Proportional to 66,431,959.70, 99,647,939.55 and 57,184,886.30
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Solution
The fourth proportional to 66,431,959.70, 99,647,939.55 and 57,184,886.30 is: 85,777,329.45
Step by Step Solution
- Step 1: Write the proportion equation
66,431,959.70 : 99,647,939.55 = 57,184,886.30 : x - Step 2: Convert to fraction form
66,431,959.70/99,647,939.55 = 57,184,886.30/x - Step 3: Cross multiply
66,431,959.70x = 99,647,939.55 × 57,184,886.30 - Step 4: Simplify right side
66,431,959.70x = 5,698,356,093,196,023 - Step 5: Solve for x
x = 5,698,356,093,196,023/66,431,959.70 - Step 6: Final answer
x = 85,777,329.45
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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.