Finding the Fourth Proportional to 77,212,672.79, 115,818,911.37 and 19,704,945.24
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Solution
The fourth proportional to 77,212,672.79, 115,818,911.37 and 19,704,945.24 is: 29,557,392.90
Step by Step Solution
- Step 1: Write the proportion equation
77,212,672.79 : 115,818,911.37 = 19,704,945.24 : x - Step 2: Convert to fraction form
77,212,672.79/115,818,911.37 = 19,704,945.24/x - Step 3: Cross multiply
77,212,672.79x = 115,818,911.37 × 19,704,945.24 - Step 4: Simplify right side
77,212,672.79x = 2,282,205,306,493,004.50 - Step 5: Solve for x
x = 2,282,205,306,493,004.50/77,212,672.79 - Step 6: Final answer
x = 29,557,392.90
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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.