Finding the Fourth Proportional to 81,483.60, 122,079.60 and 68,944.80
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Solution
The fourth proportional to 81,483.60, 122,079.60 and 68,944.80 is: 103,293.84
Step by Step Solution
- Step 1: Write the proportion equation
81,483.60 : 122,079.60 = 68,944.80 : x - Step 2: Convert to fraction form
81,483.60/122,079.60 = 68,944.80/x - Step 3: Cross multiply
81,483.60x = 122,079.60 × 68,944.80 - Step 4: Simplify right side
81,483.60x = 8,416,753,606.08 - Step 5: Solve for x
x = 8,416,753,606.08/81,483.60 - Step 6: Final answer
x = 103,293.84
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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.