Finding the Fourth Proportional to 31,644,067.20, 47,340,129.60 and 27,431,030.40
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Solution
The fourth proportional to 31,644,067.20, 47,340,129.60 and 27,431,030.40 is: 41,037,345.99
Step by Step Solution
- Step 1: Write the proportion equation
31,644,067.20 : 47,340,129.60 = 27,431,030.40 : x - Step 2: Convert to fraction form
31,644,067.20/47,340,129.60 = 27,431,030.40/x - Step 3: Cross multiply
31,644,067.20x = 47,340,129.60 × 27,431,030.40 - Step 4: Simplify right side
31,644,067.20x = 1,298,588,534,197,539.75 - Step 5: Solve for x
x = 1,298,588,534,197,539.75/31,644,067.20 - Step 6: Final answer
x = 41,037,345.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.