Finding the Fourth Proportional to 77,212,677.30, 115,818,918.12 and 19,704,949.75
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Solution
The fourth proportional to 77,212,677.30, 115,818,918.12 and 19,704,949.75 is: 29,557,399.66
Step by Step Solution
- Step 1: Write the proportion equation
77,212,677.30 : 115,818,918.12 = 19,704,949.75 : x - Step 2: Convert to fraction form
77,212,677.30/115,818,918.12 = 19,704,949.75/x - Step 3: Cross multiply
77,212,677.30x = 115,818,918.12 × 19,704,949.75 - Step 4: Simplify right side
77,212,677.30x = 2,282,205,961,798,738 - Step 5: Solve for x
x = 2,282,205,961,798,738/77,212,677.30 - Step 6: Final answer
x = 29,557,399.66
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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.