Finding the Fourth Proportional to 65,418,208.20, 90,277,255.62 and 39,313,126.44
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Solution
The fourth proportional to 65,418,208.20, 90,277,255.62 and 39,313,126.44 is: 54,252,191.59
Step by Step Solution
- Step 1: Write the proportion equation
65,418,208.20 : 90,277,255.62 = 39,313,126.44 : x - Step 2: Convert to fraction form
65,418,208.20/90,277,255.62 = 39,313,126.44/x - Step 3: Cross multiply
65,418,208.20x = 90,277,255.62 × 39,313,126.44 - Step 4: Simplify right side
65,418,208.20x = 3,549,081,164,845,260.50 - Step 5: Solve for x
x = 3,549,081,164,845,260.50/65,418,208.20 - Step 6: Final answer
x = 54,252,191.59
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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.