Finding the Fourth Proportional to 85,713.36, 118,289.88 and 47,989.68
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Solution
The fourth proportional to 85,713.36, 118,289.88 and 47,989.68 is: 66,228.81
Step by Step Solution
- Step 1: Write the proportion equation
85,713.36 : 118,289.88 = 47,989.68 : x - Step 2: Convert to fraction form
85,713.36/118,289.88 = 47,989.68/x - Step 3: Cross multiply
85,713.36x = 118,289.88 × 47,989.68 - Step 4: Simplify right side
85,713.36x = 5,676,693,488.44 - Step 5: Solve for x
x = 5,676,693,488.44/85,713.36 - Step 6: Final answer
x = 66,228.81
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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.