Finding the Fourth Proportional to 39,860,434.80, 55,007,399.70 and 21,525,718.68
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Solution
The fourth proportional to 39,860,434.80, 55,007,399.70 and 21,525,718.68 is: 29,705,491.60
Step by Step Solution
- Step 1: Write the proportion equation
39,860,434.80 : 55,007,399.70 = 21,525,718.68 : x - Step 2: Convert to fraction form
39,860,434.80/55,007,399.70 = 21,525,718.68/x - Step 3: Cross multiply
39,860,434.80x = 55,007,399.70 × 21,525,718.68 - Step 4: Simplify right side
39,860,434.80x = 1,184,073,811,260,516.50 - Step 5: Solve for x
x = 1,184,073,811,260,516.50/39,860,434.80 - Step 6: Final answer
x = 29,705,491.60
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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.