Finding the Fourth Proportional to 71,859.30, 107,780.73 and 19,264.68
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Solution
The fourth proportional to 71,859.30, 107,780.73 and 19,264.68 is: 28,894.82
Step by Step Solution
- Step 1: Write the proportion equation
71,859.30 : 107,780.73 = 19,264.68 : x - Step 2: Convert to fraction form
71,859.30/107,780.73 = 19,264.68/x - Step 3: Cross multiply
71,859.30x = 107,780.73 × 19,264.68 - Step 4: Simplify right side
71,859.30x = 2,076,361,273.62 - Step 5: Solve for x
x = 2,076,361,273.62/71,859.30 - Step 6: Final answer
x = 28,894.82
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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.