Finding the Fourth Proportional to 39,057,993.84, 53,905,611.48 and 21,658,208.88
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Solution
The fourth proportional to 39,057,993.84, 53,905,611.48 and 21,658,208.88 is: 29,891,422.43
Step by Step Solution
- Step 1: Write the proportion equation
39,057,993.84 : 53,905,611.48 = 21,658,208.88 : x - Step 2: Convert to fraction form
39,057,993.84/53,905,611.48 = 21,658,208.88/x - Step 3: Cross multiply
39,057,993.84x = 53,905,611.48 × 21,658,208.88 - Step 4: Simplify right side
39,057,993.84x = 1,167,498,993,237,965.75 - Step 5: Solve for x
x = 1,167,498,993,237,965.75/39,057,993.84 - Step 6: Final answer
x = 29,891,422.43
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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.