Finding the Fourth Proportional to 75,735.36, 104,384.16 and 56,839.68
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Solution
The fourth proportional to 75,735.36, 104,384.16 and 56,839.68 is: 78,340.71
Step by Step Solution
- Step 1: Write the proportion equation
75,735.36 : 104,384.16 = 56,839.68 : x - Step 2: Convert to fraction form
75,735.36/104,384.16 = 56,839.68/x - Step 3: Cross multiply
75,735.36x = 104,384.16 × 56,839.68 - Step 4: Simplify right side
75,735.36x = 5,933,162,251.47 - Step 5: Solve for x
x = 5,933,162,251.47/75,735.36 - Step 6: Final answer
x = 78,340.71
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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.