Finding the Fourth Proportional to 74,006.92, 102,129.30 and 40,475.08
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Solution
The fourth proportional to 74,006.92, 102,129.30 and 40,475.08 is: 55,855.47
Step by Step Solution
- Step 1: Write the proportion equation
74,006.92 : 102,129.30 = 40,475.08 : x - Step 2: Convert to fraction form
74,006.92/102,129.30 = 40,475.08/x - Step 3: Cross multiply
74,006.92x = 102,129.30 × 40,475.08 - Step 4: Simplify right side
74,006.92x = 4,133,691,587.84 - Step 5: Solve for x
x = 4,133,691,587.84/74,006.92 - Step 6: Final answer
x = 55,855.47
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1.5x scale
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.