Finding the Fourth Proportional to 68,947.68, 103,325.84 and 31,416.03
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Solution
The fourth proportional to 68,947.68, 103,325.84 and 31,416.03 is: 47,080.45
Step by Step Solution
- Step 1: Write the proportion equation
68,947.68 : 103,325.84 = 31,416.03 : x - Step 2: Convert to fraction form
68,947.68/103,325.84 = 31,416.03/x - Step 3: Cross multiply
68,947.68x = 103,325.84 × 31,416.03 - Step 4: Simplify right side
68,947.68x = 3,246,087,689.22 - Step 5: Solve for x
x = 3,246,087,689.22/68,947.68 - Step 6: Final answer
x = 47,080.45
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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.