Finding the Fourth Proportional to 78,840.93, 118,276.97 and 28,921.49
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Solution
The fourth proportional to 78,840.93, 118,276.97 and 28,921.49 is: 43,387.95
Step by Step Solution
- Step 1: Write the proportion equation
78,840.93 : 118,276.97 = 28,921.49 : x - Step 2: Convert to fraction form
78,840.93/118,276.97 = 28,921.49/x - Step 3: Cross multiply
78,840.93x = 118,276.97 × 28,921.49 - Step 4: Simplify right side
78,840.93x = 3,420,746,205.09 - Step 5: Solve for x
x = 3,420,746,205.09/78,840.93 - Step 6: Final answer
x = 43,387.95
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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.