Finding the Fourth Proportional to 102,543.40, 153,764.43 and 31,448.99
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Solution
The fourth proportional to 102,543.40, 153,764.43 and 31,448.99 is: 47,157.94
Step by Step Solution
- Step 1: Write the proportion equation
102,543.40 : 153,764.43 = 31,448.99 : x - Step 2: Convert to fraction form
102,543.40/153,764.43 = 31,448.99/x - Step 3: Cross multiply
102,543.40x = 153,764.43 × 31,448.99 - Step 4: Simplify right side
102,543.40x = 4,835,735,422.98 - Step 5: Solve for x
x = 4,835,735,422.98/102,543.40 - Step 6: Final answer
x = 47,157.94
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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.