Finding the Fourth Proportional to 40,721,206.47, 61,081,821.85 and 11,967,342.09
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Solution
The fourth proportional to 40,721,206.47, 61,081,821.85 and 11,967,342.09 is: 17,951,016.70
Step by Step Solution
- Step 1: Write the proportion equation
40,721,206.47 : 61,081,821.85 = 11,967,342.09 : x - Step 2: Convert to fraction form
40,721,206.47/61,081,821.85 = 11,967,342.09/x - Step 3: Cross multiply
40,721,206.47x = 61,081,821.85 × 11,967,342.09 - Step 4: Simplify right side
40,721,206.47x = 730,987,057,559,386.62 - Step 5: Solve for x
x = 730,987,057,559,386.62/40,721,206.47 - Step 6: Final answer
x = 17,951,016.70
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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.