Finding the Fourth Proportional to 83,695.81, 125,543.37 and 30,387.68
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Solution
The fourth proportional to 83,695.81, 125,543.37 and 30,387.68 is: 45,581.40
Step by Step Solution
- Step 1: Write the proportion equation
83,695.81 : 125,543.37 = 30,387.68 : x - Step 2: Convert to fraction form
83,695.81/125,543.37 = 30,387.68/x - Step 3: Cross multiply
83,695.81x = 125,543.37 × 30,387.68 - Step 4: Simplify right side
83,695.81x = 3,814,971,892.87 - Step 5: Solve for x
x = 3,814,971,892.87/83,695.81 - Step 6: Final answer
x = 45,581.40
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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.