Finding the Fourth Proportional to 38,647,247.63, 53,332,887.35 and 21,243,407.81
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Solution
The fourth proportional to 38,647,247.63, 53,332,887.35 and 21,243,407.81 is: 29,315,729.97
Step by Step Solution
- Step 1: Write the proportion equation
38,647,247.63 : 53,332,887.35 = 21,243,407.81 : x - Step 2: Convert to fraction form
38,647,247.63/53,332,887.35 = 21,243,407.81/x - Step 3: Cross multiply
38,647,247.63x = 53,332,887.35 × 21,243,407.81 - Step 4: Simplify right side
38,647,247.63x = 1,132,972,275,474,399.50 - Step 5: Solve for x
x = 1,132,972,275,474,399.50/38,647,247.63 - Step 6: Final answer
x = 29,315,729.97
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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.