Finding the Fourth Proportional to 90,372.99, 135,557.43 and 31,203.09
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Solution
The fourth proportional to 90,372.99, 135,557.43 and 31,203.09 is: 46,803.93
Step by Step Solution
- Step 1: Write the proportion equation
90,372.99 : 135,557.43 = 31,203.09 : x - Step 2: Convert to fraction form
90,372.99/135,557.43 = 31,203.09/x - Step 3: Cross multiply
90,372.99x = 135,557.43 × 31,203.09 - Step 4: Simplify right side
90,372.99x = 4,229,810,688.46 - Step 5: Solve for x
x = 4,229,810,688.46/90,372.99 - Step 6: Final answer
x = 46,803.93
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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.