Finding the Fourth Proportional to 57,121,588.44, 85,685,138.28 and 18,782,253.72
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Solution
The fourth proportional to 57,121,588.44, 85,685,138.28 and 18,782,253.72 is: 28,174,286.66
Step by Step Solution
- Step 1: Write the proportion equation
57,121,588.44 : 85,685,138.28 = 18,782,253.72 : x - Step 2: Convert to fraction form
57,121,588.44/85,685,138.28 = 18,782,253.72/x - Step 3: Cross multiply
57,121,588.44x = 85,685,138.28 × 18,782,253.72 - Step 4: Simplify right side
57,121,588.44x = 1,609,360,007,208,244.25 - Step 5: Solve for x
x = 1,609,360,007,208,244.25/57,121,588.44 - Step 6: Final answer
x = 28,174,286.66
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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.