Finding the Fourth Proportional to 71,619.09, 106,902.92 and 66,341.13
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Solution
The fourth proportional to 71,619.09, 106,902.92 and 66,341.13 is: 99,024.72
Step by Step Solution
- Step 1: Write the proportion equation
71,619.09 : 106,902.92 = 66,341.13 : x - Step 2: Convert to fraction form
71,619.09/106,902.92 = 66,341.13/x - Step 3: Cross multiply
71,619.09x = 106,902.92 × 66,341.13 - Step 4: Simplify right side
71,619.09x = 7,092,060,513.10 - Step 5: Solve for x
x = 7,092,060,513.10/71,619.09 - Step 6: Final answer
x = 99,024.72
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.