Finding the Fourth Proportional to 76,643.42, 114,988.53 and 39,230.00
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Solution
The fourth proportional to 76,643.42, 114,988.53 and 39,230.00 is: 58,856.97
Step by Step Solution
- Step 1: Write the proportion equation
76,643.42 : 114,988.53 = 39,230.00 : x - Step 2: Convert to fraction form
76,643.42/114,988.53 = 39,230.00/x - Step 3: Cross multiply
76,643.42x = 114,988.53 × 39,230.00 - Step 4: Simplify right side
76,643.42x = 4,510,999,456.96 - Step 5: Solve for x
x = 4,510,999,456.96/76,643.42 - Step 6: Final answer
x = 58,856.97
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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.