Finding the Fourth Proportional to 31,187,210.12, 43,021,072.97 and 18,133,026.26
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Solution
The fourth proportional to 31,187,210.12, 43,021,072.97 and 18,133,026.26 is: 25,013,530.96
Step by Step Solution
- Step 1: Write the proportion equation
31,187,210.12 : 43,021,072.97 = 18,133,026.26 : x - Step 2: Convert to fraction form
31,187,210.12/43,021,072.97 = 18,133,026.26/x - Step 3: Cross multiply
31,187,210.12x = 43,021,072.97 × 18,133,026.26 - Step 4: Simplify right side
31,187,210.12x = 780,102,245,898,386.25 - Step 5: Solve for x
x = 780,102,245,898,386.25/31,187,210.12 - Step 6: Final answer
x = 25,013,530.96
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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.