Finding the Fourth Proportional to 80,691.12, 120,738.08 and 48,688.74
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Solution
The fourth proportional to 80,691.12, 120,738.08 and 48,688.74 is: 72,852.94
Step by Step Solution
- Step 1: Write the proportion equation
80,691.12 : 120,738.08 = 48,688.74 : x - Step 2: Convert to fraction form
80,691.12/120,738.08 = 48,688.74/x - Step 3: Cross multiply
80,691.12x = 120,738.08 × 48,688.74 - Step 4: Simplify right side
80,691.12x = 5,878,584,985.22 - Step 5: Solve for x
x = 5,878,584,985.22/80,691.12 - Step 6: Final answer
x = 72,852.94
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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.