Finding the Fourth Proportional to 39,860,131.68, 55,006,982.01 and 21,525,417.18
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Solution
The fourth proportional to 39,860,131.68, 55,006,982.01 and 21,525,417.18 is: 29,705,075.87
Step by Step Solution
- Step 1: Write the proportion equation
39,860,131.68 : 55,006,982.01 = 21,525,417.18 : x - Step 2: Convert to fraction form
39,860,131.68/55,006,982.01 = 21,525,417.18/x - Step 3: Cross multiply
39,860,131.68x = 55,006,982.01 × 21,525,417.18 - Step 4: Simplify right side
39,860,131.68x = 1,184,048,235,578,004.75 - Step 5: Solve for x
x = 1,184,048,235,578,004.75/39,860,131.68 - Step 6: Final answer
x = 29,705,075.87
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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.