Finding the Fourth Proportional to 31,100,854.87, 42,927,716.29 and 18,052,317.62
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Solution
The fourth proportional to 31,100,854.87, 42,927,716.29 and 18,052,317.62 is: 24,917,153.32
Step by Step Solution
- Step 1: Write the proportion equation
31,100,854.87 : 42,927,716.29 = 18,052,317.62 : x - Step 2: Convert to fraction form
31,100,854.87/42,927,716.29 = 18,052,317.62/x - Step 3: Cross multiply
31,100,854.87x = 42,927,716.29 × 18,052,317.62 - Step 4: Simplify right side
31,100,854.87x = 774,944,768,953,689.38 - Step 5: Solve for x
x = 774,944,768,953,689.38/31,100,854.87 - Step 6: Final answer
x = 24,917,153.32
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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.