Finding the Fourth Proportional to 39,203,939.20, 54,102,748.21 and 21,563,587.63
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Solution
The fourth proportional to 39,203,939.20, 54,102,748.21 and 21,563,587.63 is: 29,758,472.64
Step by Step Solution
- Step 1: Write the proportion equation
39,203,939.20 : 54,102,748.21 = 21,563,587.63 : x - Step 2: Convert to fraction form
39,203,939.20/54,102,748.21 = 21,563,587.63/x - Step 3: Cross multiply
39,203,939.20x = 54,102,748.21 × 21,563,587.63 - Step 4: Simplify right side
39,203,939.20x = 1,166,649,352,185,175.25 - Step 5: Solve for x
x = 1,166,649,352,185,175.25/39,203,939.20 - Step 6: Final answer
x = 29,758,472.64
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.