Finding the Fourth Proportional to 55,148,413.76, 76,103,324.16 and 30,702,129.92
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Solution
The fourth proportional to 55,148,413.76, 76,103,324.16 and 30,702,129.92 is: 42,368,111.54
Step by Step Solution
- Step 1: Write the proportion equation
55,148,413.76 : 76,103,324.16 = 30,702,129.92 : x - Step 2: Convert to fraction form
55,148,413.76/76,103,324.16 = 30,702,129.92/x - Step 3: Cross multiply
55,148,413.76x = 76,103,324.16 × 30,702,129.92 - Step 4: Simplify right side
55,148,413.76x = 2,336,534,145,704,195 - Step 5: Solve for x
x = 2,336,534,145,704,195/55,148,413.76 - Step 6: Final answer
x = 42,368,111.54
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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.