Finding the Fourth Proportional to 75,296,965.21, 103,911,872.78 and 42,259,262.26
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Solution
The fourth proportional to 75,296,965.21, 103,911,872.78 and 42,259,262.26 is: 58,318,938.50
Step by Step Solution
- Step 1: Write the proportion equation
75,296,965.21 : 103,911,872.78 = 42,259,262.26 : x - Step 2: Convert to fraction form
75,296,965.21/103,911,872.78 = 42,259,262.26/x - Step 3: Cross multiply
75,296,965.21x = 103,911,872.78 × 42,259,262.26 - Step 4: Simplify right side
75,296,965.21x = 4,391,239,083,832,758.50 - Step 5: Solve for x
x = 4,391,239,083,832,758.50/75,296,965.21 - Step 6: Final answer
x = 58,318,938.50
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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.