Finding the Fourth Proportional to 69,936.80, 104,823.84 and 39,972.02
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Solution
The fourth proportional to 69,936.80, 104,823.84 and 39,972.02 is: 59,911.53
Step by Step Solution
- Step 1: Write the proportion equation
69,936.80 : 104,823.84 = 39,972.02 : x - Step 2: Convert to fraction form
69,936.80/104,823.84 = 39,972.02/x - Step 3: Cross multiply
69,936.80x = 104,823.84 × 39,972.02 - Step 4: Simplify right side
69,936.80x = 4,190,020,628.96 - Step 5: Solve for x
x = 4,190,020,628.96/69,936.80 - Step 6: Final answer
x = 59,911.53
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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.