Finding the Fourth Proportional to 78,574.24, 117,861.36 and 64,694.08
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Solution
The fourth proportional to 78,574.24, 117,861.36 and 64,694.08 is: 97,041.12
Step by Step Solution
- Step 1: Write the proportion equation
78,574.24 : 117,861.36 = 64,694.08 : x - Step 2: Convert to fraction form
78,574.24/117,861.36 = 64,694.08/x - Step 3: Cross multiply
78,574.24x = 117,861.36 × 64,694.08 - Step 4: Simplify right side
78,574.24x = 7,624,932,252.75 - Step 5: Solve for x
x = 7,624,932,252.75/78,574.24 - Step 6: Final answer
x = 97,041.12
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.