Finding the Fourth Proportional to 75,272.40, 112,908.60 and 57,557.70
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Solution
The fourth proportional to 75,272.40, 112,908.60 and 57,557.70 is: 86,336.55
Step by Step Solution
- Step 1: Write the proportion equation
75,272.40 : 112,908.60 = 57,557.70 : x - Step 2: Convert to fraction form
75,272.40/112,908.60 = 57,557.70/x - Step 3: Cross multiply
75,272.40x = 112,908.60 × 57,557.70 - Step 4: Simplify right side
75,272.40x = 6,498,759,326.22 - Step 5: Solve for x
x = 6,498,759,326.22/75,272.40 - Step 6: Final answer
x = 86,336.55
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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.