Finding the Fourth Proportional to 74,691.36, 102,932.16 and 53,433.72
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Solution
The fourth proportional to 74,691.36, 102,932.16 and 53,433.72 is: 73,637.01
Step by Step Solution
- Step 1: Write the proportion equation
74,691.36 : 102,932.16 = 53,433.72 : x - Step 2: Convert to fraction form
74,691.36/102,932.16 = 53,433.72/x - Step 3: Cross multiply
74,691.36x = 102,932.16 × 53,433.72 - Step 4: Simplify right side
74,691.36x = 5,500,048,216.44 - Step 5: Solve for x
x = 5,500,048,216.44/74,691.36 - Step 6: Final answer
x = 73,637.01
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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.