Finding the Fourth Proportional to 71,959.68, 107,947.20 and 19,369.92
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Solution
The fourth proportional to 71,959.68, 107,947.20 and 19,369.92 is: 29,056.95
Step by Step Solution
- Step 1: Write the proportion equation
71,959.68 : 107,947.20 = 19,369.92 : x - Step 2: Convert to fraction form
71,959.68/107,947.20 = 19,369.92/x - Step 3: Cross multiply
71,959.68x = 107,947.20 × 19,369.92 - Step 4: Simplify right side
71,959.68x = 2,090,928,628.22 - Step 5: Solve for x
x = 2,090,928,628.22/71,959.68 - Step 6: Final answer
x = 29,056.95
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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.