Finding the Fourth Proportional to 77,201.60, 115,656.60 and 39,633.80
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Solution
The fourth proportional to 77,201.60, 115,656.60 and 39,633.80 is: 59,375.85
Step by Step Solution
- Step 1: Write the proportion equation
77,201.60 : 115,656.60 = 39,633.80 : x - Step 2: Convert to fraction form
77,201.60/115,656.60 = 39,633.80/x - Step 3: Cross multiply
77,201.60x = 115,656.60 × 39,633.80 - Step 4: Simplify right side
77,201.60x = 4,583,910,553.08 - Step 5: Solve for x
x = 4,583,910,553.08/77,201.60 - Step 6: Final answer
x = 59,375.85
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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.