Finding the Fourth Proportional to 98,649.52, 147,988.55 and 31,158.70
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Solution
The fourth proportional to 98,649.52, 147,988.55 and 31,158.70 is: 46,742.56
Step by Step Solution
- Step 1: Write the proportion equation
98,649.52 : 147,988.55 = 31,158.70 : x - Step 2: Convert to fraction form
98,649.52/147,988.55 = 31,158.70/x - Step 3: Cross multiply
98,649.52x = 147,988.55 × 31,158.70 - Step 4: Simplify right side
98,649.52x = 4,611,130,540.81 - Step 5: Solve for x
x = 4,611,130,540.81/98,649.52 - Step 6: Final answer
x = 46,742.56
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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.