Finding the Fourth Proportional to 91,352.68, 137,044.74 and 31,378.31
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Solution
The fourth proportional to 91,352.68, 137,044.74 and 31,378.31 is: 47,072.86
Step by Step Solution
- Step 1: Write the proportion equation
91,352.68 : 137,044.74 = 31,378.31 : x - Step 2: Convert to fraction form
91,352.68/137,044.74 = 31,378.31/x - Step 3: Cross multiply
91,352.68x = 137,044.74 × 31,378.31 - Step 4: Simplify right side
91,352.68x = 4,300,232,335.59 - Step 5: Solve for x
x = 4,300,232,335.59/91,352.68 - Step 6: Final answer
x = 47,072.86
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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.