Finding the Fourth Proportional to 90,642.44, 135,823.93 and 48,528.11
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Solution
The fourth proportional to 90,642.44, 135,823.93 and 48,528.11 is: 72,717.35
Step by Step Solution
- Step 1: Write the proportion equation
90,642.44 : 135,823.93 = 48,528.11 : x - Step 2: Convert to fraction form
90,642.44/135,823.93 = 48,528.11/x - Step 3: Cross multiply
90,642.44x = 135,823.93 × 48,528.11 - Step 4: Simplify right side
90,642.44x = 6,591,277,815.23 - Step 5: Solve for x
x = 6,591,277,815.23/90,642.44 - Step 6: Final answer
x = 72,717.35
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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.