Finding the Fourth Proportional to 87,664,590.60, 131,496,885.90 and 73,421,971.80
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Solution
The fourth proportional to 87,664,590.60, 131,496,885.90 and 73,421,971.80 is: 110,132,957.70
Step by Step Solution
- Step 1: Write the proportion equation
87,664,590.60 : 131,496,885.90 = 73,421,971.80 : x - Step 2: Convert to fraction form
87,664,590.60/131,496,885.90 = 73,421,971.80/x - Step 3: Cross multiply
87,664,590.60x = 131,496,885.90 × 73,421,971.80 - Step 4: Simplify right side
87,664,590.60x = 9,654,760,648,337,618 - Step 5: Solve for x
x = 9,654,760,648,337,618/87,664,590.60 - Step 6: Final answer
x = 110,132,957.70
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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.