Finding the Fourth Proportional to 39,872,091.50, 55,023,508.41 and 21,537,377.18
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Solution
The fourth proportional to 39,872,091.50, 55,023,508.41 and 21,537,377.18 is: 29,721,592.47
Step by Step Solution
- Step 1: Write the proportion equation
39,872,091.50 : 55,023,508.41 = 21,537,377.18 : x - Step 2: Convert to fraction form
39,872,091.50/55,023,508.41 = 21,537,377.18/x - Step 3: Cross multiply
39,872,091.50x = 55,023,508.41 × 21,537,377.18 - Step 4: Simplify right side
39,872,091.50x = 1,185,062,054,393,072 - Step 5: Solve for x
x = 1,185,062,054,393,072/39,872,091.50 - Step 6: Final answer
x = 29,721,592.47
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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.