Finding the Fourth Proportional to 71,356,431.90, 98,474,577.39 and 39,995,055.66
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Solution
The fourth proportional to 71,356,431.90, 98,474,577.39 and 39,995,055.66 is: 55,194,690.92
Step by Step Solution
- Step 1: Write the proportion equation
71,356,431.90 : 98,474,577.39 = 39,995,055.66 : x - Step 2: Convert to fraction form
71,356,431.90/98,474,577.39 = 39,995,055.66/x - Step 3: Cross multiply
71,356,431.90x = 98,474,577.39 × 39,995,055.66 - Step 4: Simplify right side
71,356,431.90x = 3,938,496,203,808,027 - Step 5: Solve for x
x = 3,938,496,203,808,027/71,356,431.90 - Step 6: Final answer
x = 55,194,690.92
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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.