Finding the Fourth Proportional to 7,171,135.98, 9,895,879.71 and 3,907,881.21
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Solution
The fourth proportional to 7,171,135.98, 9,895,879.71 and 3,907,881.21 is: 5,392,719.16
Step by Step Solution
- Step 1: Write the proportion equation
7,171,135.98 : 9,895,879.71 = 3,907,881.21 : x - Step 2: Convert to fraction form
7,171,135.98/9,895,879.71 = 3,907,881.21/x - Step 3: Cross multiply
7,171,135.98x = 9,895,879.71 × 3,907,881.21 - Step 4: Simplify right side
7,171,135.98x = 38,671,922,375,129.25 - Step 5: Solve for x
x = 38,671,922,375,129.25/7,171,135.98 - Step 6: Final answer
x = 5,392,719.16
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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.