Finding the Fourth Proportional to 74,992.96, 112,486.64 and 18,833.44
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Solution
The fourth proportional to 74,992.96, 112,486.64 and 18,833.44 is: 28,249.46
Step by Step Solution
- Step 1: Write the proportion equation
74,992.96 : 112,486.64 = 18,833.44 : x - Step 2: Convert to fraction form
74,992.96/112,486.64 = 18,833.44/x - Step 3: Cross multiply
74,992.96x = 112,486.64 × 18,833.44 - Step 4: Simplify right side
74,992.96x = 2,118,510,385.24 - Step 5: Solve for x
x = 2,118,510,385.24/74,992.96 - Step 6: Final answer
x = 28,249.46
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1.5x scale
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.