Finding the Fourth Proportional to 76,451.92, 105,502.92 and 42,917.68
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Solution
The fourth proportional to 76,451.92, 105,502.92 and 42,917.68 is: 59,225.99
Step by Step Solution
- Step 1: Write the proportion equation
76,451.92 : 105,502.92 = 42,917.68 : x - Step 2: Convert to fraction form
76,451.92/105,502.92 = 42,917.68/x - Step 3: Cross multiply
76,451.92x = 105,502.92 × 42,917.68 - Step 4: Simplify right side
76,451.92x = 4,527,940,559.63 - Step 5: Solve for x
x = 4,527,940,559.63/76,451.92 - Step 6: Final answer
x = 59,225.99
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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.