Finding the Fourth Proportional to 76,245.09, 105,215.94 and 42,711.09
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Solution
The fourth proportional to 76,245.09, 105,215.94 and 42,711.09 is: 58,940.02
Step by Step Solution
- Step 1: Write the proportion equation
76,245.09 : 105,215.94 = 42,711.09 : x - Step 2: Convert to fraction form
76,245.09/105,215.94 = 42,711.09/x - Step 3: Cross multiply
76,245.09x = 105,215.94 × 42,711.09 - Step 4: Simplify right side
76,245.09x = 4,493,887,482.77 - Step 5: Solve for x
x = 4,493,887,482.77/76,245.09 - Step 6: Final answer
x = 58,940.02
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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.