Finding the Fourth Proportional to 85,837.24, 128,589.80 and 48,283.20
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Solution
The fourth proportional to 85,837.24, 128,589.80 and 48,283.20 is: 72,331.39
Step by Step Solution
- Step 1: Write the proportion equation
85,837.24 : 128,589.80 = 48,283.20 : x - Step 2: Convert to fraction form
85,837.24/128,589.80 = 48,283.20/x - Step 3: Cross multiply
85,837.24x = 128,589.80 × 48,283.20 - Step 4: Simplify right side
85,837.24x = 6,208,727,031.36 - Step 5: Solve for x
x = 6,208,727,031.36/85,837.24 - Step 6: Final answer
x = 72,331.39
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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.