Finding the Fourth Proportional to 77,203.62, 106,395.39 and 61,872.75
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Solution
The fourth proportional to 77,203.62, 106,395.39 and 61,872.75 is: 85,267.70
Step by Step Solution
- Step 1: Write the proportion equation
77,203.62 : 106,395.39 = 61,872.75 : x - Step 2: Convert to fraction form
77,203.62/106,395.39 = 61,872.75/x - Step 3: Cross multiply
77,203.62x = 106,395.39 × 61,872.75 - Step 4: Simplify right side
77,203.62x = 6,582,975,366.62 - Step 5: Solve for x
x = 6,582,975,366.62/77,203.62 - Step 6: Final answer
x = 85,267.70
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1.5x scale
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.