Finding the Fourth Proportional to 75,748.79, 113,627.86 and 31,379.02
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Solution
The fourth proportional to 75,748.79, 113,627.86 and 31,379.02 is: 47,070.46
Step by Step Solution
- Step 1: Write the proportion equation
75,748.79 : 113,627.86 = 31,379.02 : x - Step 2: Convert to fraction form
75,748.79/113,627.86 = 31,379.02/x - Step 3: Cross multiply
75,748.79x = 113,627.86 × 31,379.02 - Step 4: Simplify right side
75,748.79x = 3,565,530,528.98 - Step 5: Solve for x
x = 3,565,530,528.98/75,748.79 - Step 6: Final answer
x = 47,070.46
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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.