Finding the Fourth Proportional to 31,400,354.68, 43,326,137.78 and 18,345,091.08
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Solution
The fourth proportional to 31,400,354.68, 43,326,137.78 and 18,345,091.08 is: 25,312,514.84
Step by Step Solution
- Step 1: Write the proportion equation
31,400,354.68 : 43,326,137.78 = 18,345,091.08 : x - Step 2: Convert to fraction form
31,400,354.68/43,326,137.78 = 18,345,091.08/x - Step 3: Cross multiply
31,400,354.68x = 43,326,137.78 × 18,345,091.08 - Step 4: Simplify right side
31,400,354.68x = 794,821,943,718,729 - Step 5: Solve for x
x = 794,821,943,718,729/31,400,354.68 - Step 6: Final answer
x = 25,312,514.84
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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.