Finding the Fourth Proportional to 102,643.92, 141,640.53 and 57,318.36
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Solution
The fourth proportional to 102,643.92, 141,640.53 and 57,318.36 is: 79,094.82
Step by Step Solution
- Step 1: Write the proportion equation
102,643.92 : 141,640.53 = 57,318.36 : x - Step 2: Convert to fraction form
102,643.92/141,640.53 = 57,318.36/x - Step 3: Cross multiply
102,643.92x = 141,640.53 × 57,318.36 - Step 4: Simplify right side
102,643.92x = 8,118,602,889.13 - Step 5: Solve for x
x = 8,118,602,889.13/102,643.92 - Step 6: Final answer
x = 79,094.82
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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.