Finding the Fourth Proportional to 78,104.99, 116,987.36 and 40,551.77
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Solution
The fourth proportional to 78,104.99, 116,987.36 and 40,551.77 is: 60,739.32
Step by Step Solution
- Step 1: Write the proportion equation
78,104.99 : 116,987.36 = 40,551.77 : x - Step 2: Convert to fraction form
78,104.99/116,987.36 = 40,551.77/x - Step 3: Cross multiply
78,104.99x = 116,987.36 × 40,551.77 - Step 4: Simplify right side
78,104.99x = 4,744,043,727.93 - Step 5: Solve for x
x = 4,744,043,727.93/78,104.99 - Step 6: Final answer
x = 60,739.32
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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.