Finding the Fourth Proportional to 78,935.12, 108,910.94 and 50,679.08
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Solution
The fourth proportional to 78,935.12, 108,910.94 and 50,679.08 is: 69,924.59
Step by Step Solution
- Step 1: Write the proportion equation
78,935.12 : 108,910.94 = 50,679.08 : x - Step 2: Convert to fraction form
78,935.12/108,910.94 = 50,679.08/x - Step 3: Cross multiply
78,935.12x = 108,910.94 × 50,679.08 - Step 4: Simplify right side
78,935.12x = 5,519,506,241.14 - Step 5: Solve for x
x = 5,519,506,241.14/78,935.12 - Step 6: Final answer
x = 69,924.59
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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.