Finding the Fourth Proportional to 76,214.92, 105,118.80 and 66,767.08
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Solution
The fourth proportional to 76,214.92, 105,118.80 and 66,767.08 is: 92,087.94
Step by Step Solution
- Step 1: Write the proportion equation
76,214.92 : 105,118.80 = 66,767.08 : x - Step 2: Convert to fraction form
76,214.92/105,118.80 = 66,767.08/x - Step 3: Cross multiply
76,214.92x = 105,118.80 × 66,767.08 - Step 4: Simplify right side
76,214.92x = 7,018,475,329.10 - Step 5: Solve for x
x = 7,018,475,329.10/76,214.92 - Step 6: Final answer
x = 92,087.94
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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.