Finding the Fourth Proportional to 88,345.81, 121,915.96 and 48,059.88
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Solution
The fourth proportional to 88,345.81, 121,915.96 and 48,059.88 is: 66,321.95
Step by Step Solution
- Step 1: Write the proportion equation
88,345.81 : 121,915.96 = 48,059.88 : x - Step 2: Convert to fraction form
88,345.81/121,915.96 = 48,059.88/x - Step 3: Cross multiply
88,345.81x = 121,915.96 × 48,059.88 - Step 4: Simplify right side
88,345.81x = 5,859,266,407.68 - Step 5: Solve for x
x = 5,859,266,407.68/88,345.81 - Step 6: Final answer
x = 66,321.95
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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.