Finding the Fourth Proportional to 76,989.10, 115,433.70 and 32,603.80
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Solution
The fourth proportional to 76,989.10, 115,433.70 and 32,603.80 is: 48,884.55
Step by Step Solution
- Step 1: Write the proportion equation
76,989.10 : 115,433.70 = 32,603.80 : x - Step 2: Convert to fraction form
76,989.10/115,433.70 = 32,603.80/x - Step 3: Cross multiply
76,989.10x = 115,433.70 × 32,603.80 - Step 4: Simplify right side
76,989.10x = 3,763,577,268.06 - Step 5: Solve for x
x = 3,763,577,268.06/76,989.10 - Step 6: Final answer
x = 48,884.55
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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.