Finding the Fourth Proportional to 90,395.19, 135,625.32 and 31,236.84
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Solution
The fourth proportional to 90,395.19, 135,625.32 and 31,236.84 is: 46,866.50
Step by Step Solution
- Step 1: Write the proportion equation
90,395.19 : 135,625.32 = 31,236.84 : x - Step 2: Convert to fraction form
90,395.19/135,625.32 = 31,236.84/x - Step 3: Cross multiply
90,395.19x = 135,625.32 × 31,236.84 - Step 4: Simplify right side
90,395.19x = 4,236,506,420.79 - Step 5: Solve for x
x = 4,236,506,420.79/90,395.19 - Step 6: Final answer
x = 46,866.50
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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.