Finding the Fourth Proportional to 78,960.18, 109,080.29 and 68,331.36
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Solution
The fourth proportional to 78,960.18, 109,080.29 and 68,331.36 is: 94,397.00
Step by Step Solution
- Step 1: Write the proportion equation
78,960.18 : 109,080.29 = 68,331.36 : x - Step 2: Convert to fraction form
78,960.18/109,080.29 = 68,331.36/x - Step 3: Cross multiply
78,960.18x = 109,080.29 × 68,331.36 - Step 4: Simplify right side
78,960.18x = 7,453,604,223.24 - Step 5: Solve for x
x = 7,453,604,223.24/78,960.18 - Step 6: Final answer
x = 94,397.00
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.