Finding the Fourth Proportional to 85,611.94, 128,424.08 and 26,439.96
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Solution
The fourth proportional to 85,611.94, 128,424.08 and 26,439.96 is: 39,661.85
Step by Step Solution
- Step 1: Write the proportion equation
85,611.94 : 128,424.08 = 26,439.96 : x - Step 2: Convert to fraction form
85,611.94/128,424.08 = 26,439.96/x - Step 3: Cross multiply
85,611.94x = 128,424.08 × 26,439.96 - Step 4: Simplify right side
85,611.94x = 3,395,527,538.24 - Step 5: Solve for x
x = 3,395,527,538.24/85,611.94 - Step 6: Final answer
x = 39,661.85
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1.5x scale
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.