Finding the Fourth Proportional to 74,031.50, 102,163.47 and 40,039.99
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Solution
The fourth proportional to 74,031.50, 102,163.47 and 40,039.99 is: 55,255.19
Step by Step Solution
- Step 1: Write the proportion equation
74,031.50 : 102,163.47 = 40,039.99 : x - Step 2: Convert to fraction form
74,031.50/102,163.47 = 40,039.99/x - Step 3: Cross multiply
74,031.50x = 102,163.47 × 40,039.99 - Step 4: Simplify right side
74,031.50x = 4,090,624,317.17 - Step 5: Solve for x
x = 4,090,624,317.17/74,031.50 - Step 6: Final answer
x = 55,255.19
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.