Finding the Fourth Proportional to 99,657.60, 149,486.40 and 52,207.80
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Solution
The fourth proportional to 99,657.60, 149,486.40 and 52,207.80 is: 78,311.70
Step by Step Solution
- Step 1: Write the proportion equation
99,657.60 : 149,486.40 = 52,207.80 : x - Step 2: Convert to fraction form
99,657.60/149,486.40 = 52,207.80/x - Step 3: Cross multiply
99,657.60x = 149,486.40 × 52,207.80 - Step 4: Simplify right side
99,657.60x = 7,804,356,073.92 - Step 5: Solve for x
x = 7,804,356,073.92/99,657.60 - Step 6: Final answer
x = 78,311.70
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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.