Finding the Fourth Proportional to 87,377,367.12, 120,583,662.72 and 47,687,071.08
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Solution
The fourth proportional to 87,377,367.12, 120,583,662.72 and 47,687,071.08 is: 65,809,738.66
Step by Step Solution
- Step 1: Write the proportion equation
87,377,367.12 : 120,583,662.72 = 47,687,071.08 : x - Step 2: Convert to fraction form
87,377,367.12/120,583,662.72 = 47,687,071.08/x - Step 3: Cross multiply
87,377,367.12x = 120,583,662.72 × 47,687,071.08 - Step 4: Simplify right side
87,377,367.12x = 5,750,281,695,215,386 - Step 5: Solve for x
x = 5,750,281,695,215,386/87,377,367.12 - Step 6: Final answer
x = 65,809,738.66
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.