Finding the Fourth Proportional to 87,879,771.60, 131,819,657.40 and 84,296,590.80
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Solution
The fourth proportional to 87,879,771.60, 131,819,657.40 and 84,296,590.80 is: 126,444,886.20
Step by Step Solution
- Step 1: Write the proportion equation
87,879,771.60 : 131,819,657.40 = 84,296,590.80 : x - Step 2: Convert to fraction form
87,879,771.60/131,819,657.40 = 84,296,590.80/x - Step 3: Cross multiply
87,879,771.60x = 131,819,657.40 × 84,296,590.80 - Step 4: Simplify right side
87,879,771.60x = 11,111,947,719,243,992 - Step 5: Solve for x
x = 11,111,947,719,243,992/87,879,771.60 - Step 6: Final answer
x = 126,444,886.20
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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.