Finding the Fourth Proportional to 78,845.43, 118,283.73 and 28,925.99
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Solution
The fourth proportional to 78,845.43, 118,283.73 and 28,925.99 is: 43,394.70
Step by Step Solution
- Step 1: Write the proportion equation
78,845.43 : 118,283.73 = 28,925.99 : x - Step 2: Convert to fraction form
78,845.43/118,283.73 = 28,925.99/x - Step 3: Cross multiply
78,845.43x = 118,283.73 × 28,925.99 - Step 4: Simplify right side
78,845.43x = 3,421,473,991.14 - Step 5: Solve for x
x = 3,421,473,991.14/78,845.43 - Step 6: Final answer
x = 43,394.70
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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.