Finding the Fourth Proportional to 70,879.61, 106,363.93 and 28,759.88
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Solution
The fourth proportional to 70,879.61, 106,363.93 and 28,759.88 is: 43,157.88
Step by Step Solution
- Step 1: Write the proportion equation
70,879.61 : 106,363.93 = 28,759.88 : x - Step 2: Convert to fraction form
70,879.61/106,363.93 = 28,759.88/x - Step 3: Cross multiply
70,879.61x = 106,363.93 × 28,759.88 - Step 4: Simplify right side
70,879.61x = 3,059,013,863.13 - Step 5: Solve for x
x = 3,059,013,863.13/70,879.61 - Step 6: Final answer
x = 43,157.88
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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.