Finding the Fourth Proportional to 40,368,028.46, 55,780,749.63 and 28,745,413.79
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Solution
The fourth proportional to 40,368,028.46, 55,780,749.63 and 28,745,413.79 is: 39,720,560.82
Step by Step Solution
- Step 1: Write the proportion equation
40,368,028.46 : 55,780,749.63 = 28,745,413.79 : x - Step 2: Convert to fraction form
40,368,028.46/55,780,749.63 = 28,745,413.79/x - Step 3: Cross multiply
40,368,028.46x = 55,780,749.63 × 28,745,413.79 - Step 4: Simplify right side
40,368,028.46x = 1,603,440,729,351,835.75 - Step 5: Solve for x
x = 1,603,440,729,351,835.75/40,368,028.46 - Step 6: Final answer
x = 39,720,560.82
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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.