Finding the Fourth Proportional to 85,435.68, 117,897.48 and 47,709.12
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Solution
The fourth proportional to 85,435.68, 117,897.48 and 47,709.12 is: 65,836.49
Step by Step Solution
- Step 1: Write the proportion equation
85,435.68 : 117,897.48 = 47,709.12 : x - Step 2: Convert to fraction form
85,435.68/117,897.48 = 47,709.12/x - Step 3: Cross multiply
85,435.68x = 117,897.48 × 47,709.12 - Step 4: Simplify right side
85,435.68x = 5,624,785,021.02 - Step 5: Solve for x
x = 5,624,785,021.02/85,435.68 - Step 6: Final answer
x = 65,836.49
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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.