Finding the Fourth Proportional to 72,669.97, 109,005.82 and 19,361.68
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Solution
The fourth proportional to 72,669.97, 109,005.82 and 19,361.68 is: 29,042.75
Step by Step Solution
- Step 1: Write the proportion equation
72,669.97 : 109,005.82 = 19,361.68 : x - Step 2: Convert to fraction form
72,669.97/109,005.82 = 19,361.68/x - Step 3: Cross multiply
72,669.97x = 109,005.82 × 19,361.68 - Step 4: Simplify right side
72,669.97x = 2,110,535,804.98 - Step 5: Solve for x
x = 2,110,535,804.98/72,669.97 - Step 6: Final answer
x = 29,042.75
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.