Finding the Fourth Proportional to 87,001,231.14, 120,377,857.19 and 75,860,938.21
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Solution
The fourth proportional to 87,001,231.14, 120,377,857.19 and 75,860,938.21 is: 104,963,769.66
Step by Step Solution
- Step 1: Write the proportion equation
87,001,231.14 : 120,377,857.19 = 75,860,938.21 : x - Step 2: Convert to fraction form
87,001,231.14/120,377,857.19 = 75,860,938.21/x - Step 3: Cross multiply
87,001,231.14x = 120,377,857.19 × 75,860,938.21 - Step 4: Simplify right side
87,001,231.14x = 9,131,977,185,462,544 - Step 5: Solve for x
x = 9,131,977,185,462,544/87,001,231.14 - Step 6: Final answer
x = 104,963,769.66
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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.