Finding the Fourth Proportional to 85,239.80, 127,831.99 and 40,254.19
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Solution
The fourth proportional to 85,239.80, 127,831.99 and 40,254.19 is: 60,368.20
Step by Step Solution
- Step 1: Write the proportion equation
85,239.80 : 127,831.99 = 40,254.19 : x - Step 2: Convert to fraction form
85,239.80/127,831.99 = 40,254.19/x - Step 3: Cross multiply
85,239.80x = 127,831.99 × 40,254.19 - Step 4: Simplify right side
85,239.80x = 5,145,773,213.54 - Step 5: Solve for x
x = 5,145,773,213.54/85,239.80 - Step 6: Final answer
x = 60,368.20
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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.