Finding the Fourth Proportional to 77,305.84, 115,957.08 and 21,145.94
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Solution
The fourth proportional to 77,305.84, 115,957.08 and 21,145.94 is: 31,718.45
Step by Step Solution
- Step 1: Write the proportion equation
77,305.84 : 115,957.08 = 21,145.94 : x - Step 2: Convert to fraction form
77,305.84/115,957.08 = 21,145.94/x - Step 3: Cross multiply
77,305.84x = 115,957.08 × 21,145.94 - Step 4: Simplify right side
77,305.84x = 2,452,021,456.26 - Step 5: Solve for x
x = 2,452,021,456.26/77,305.84 - Step 6: Final answer
x = 31,718.45
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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.