Finding the Fourth Proportional to 78,784.97, 118,078.90 and 39,353.09
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Solution
The fourth proportional to 78,784.97, 118,078.90 and 39,353.09 is: 58,980.40
Step by Step Solution
- Step 1: Write the proportion equation
78,784.97 : 118,078.90 = 39,353.09 : x - Step 2: Convert to fraction form
78,784.97/118,078.90 = 39,353.09/x - Step 3: Cross multiply
78,784.97x = 118,078.90 × 39,353.09 - Step 4: Simplify right side
78,784.97x = 4,646,768,791.64 - Step 5: Solve for x
x = 4,646,768,791.64/78,784.97 - Step 6: Final answer
x = 58,980.40
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1.5x scale
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.