Finding the Fourth Proportional to 75,863.68, 104,679.36 and 42,329.60
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Solution
The fourth proportional to 75,863.68, 104,679.36 and 42,329.60 is: 58,407.86
Step by Step Solution
- Step 1: Write the proportion equation
75,863.68 : 104,679.36 = 42,329.60 : x - Step 2: Convert to fraction form
75,863.68/104,679.36 = 42,329.60/x - Step 3: Cross multiply
75,863.68x = 104,679.36 × 42,329.60 - Step 4: Simplify right side
75,863.68x = 4,431,035,437.06 - Step 5: Solve for x
x = 4,431,035,437.06/75,863.68 - Step 6: Final answer
x = 58,407.86
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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.