Finding the Fourth Proportional to 28,700,749.20, 39,644,840.97 and 21,273,467.97
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Solution
The fourth proportional to 28,700,749.20, 39,644,840.97 and 21,273,467.97 is: 29,385,409.02
Step by Step Solution
- Step 1: Write the proportion equation
28,700,749.20 : 39,644,840.97 = 21,273,467.97 : x - Step 2: Convert to fraction form
28,700,749.20/39,644,840.97 = 21,273,467.97/x - Step 3: Cross multiply
28,700,749.20x = 39,644,840.97 × 21,273,467.97 - Step 4: Simplify right side
28,700,749.20x = 843,383,254,551,038.62 - Step 5: Solve for x
x = 843,383,254,551,038.62/28,700,749.20 - Step 6: Final answer
x = 29,385,409.02
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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.