Finding the Fourth Proportional to 39,872,456.13, 55,024,013.57 and 21,537,749.73
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Solution
The fourth proportional to 39,872,456.13, 55,024,013.57 and 21,537,749.73 is: 29,722,107.65
Step by Step Solution
- Step 1: Write the proportion equation
39,872,456.13 : 55,024,013.57 = 21,537,749.73 : x - Step 2: Convert to fraction form
39,872,456.13/55,024,013.57 = 21,537,749.73/x - Step 3: Cross multiply
39,872,456.13x = 55,024,013.57 × 21,537,749.73 - Step 4: Simplify right side
39,872,456.13x = 1,185,093,433,303,095 - Step 5: Solve for x
x = 1,185,093,433,303,095/39,872,456.13 - Step 6: Final answer
x = 29,722,107.65
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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.