Finding the Fourth Proportional to 38,831,700.21, 53,587,409.02 and 21,190,951.79
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Solution
The fourth proportional to 38,831,700.21, 53,587,409.02 and 21,190,951.79 is: 29,243,329.42
Step by Step Solution
- Step 1: Write the proportion equation
38,831,700.21 : 53,587,409.02 = 21,190,951.79 : x - Step 2: Convert to fraction form
38,831,700.21/53,587,409.02 = 21,190,951.79/x - Step 3: Cross multiply
38,831,700.21x = 53,587,409.02 × 21,190,951.79 - Step 4: Simplify right side
38,831,700.21x = 1,135,568,201,174,822.25 - Step 5: Solve for x
x = 1,135,568,201,174,822.25/38,831,700.21 - Step 6: Final answer
x = 29,243,329.42
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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.