Finding the Fourth Proportional to 99,858,609.36, 137,792,946.06 and 55,198,548.54
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Solution
The fourth proportional to 99,858,609.36, 137,792,946.06 and 55,198,548.54 is: 76,167,399.79
Step by Step Solution
- Step 1: Write the proportion equation
99,858,609.36 : 137,792,946.06 = 55,198,548.54 : x - Step 2: Convert to fraction form
99,858,609.36/137,792,946.06 = 55,198,548.54/x - Step 3: Cross multiply
99,858,609.36x = 137,792,946.06 × 55,198,548.54 - Step 4: Simplify right side
99,858,609.36x = 7,605,970,621,562,512 - Step 5: Solve for x
x = 7,605,970,621,562,512/99,858,609.36 - Step 6: Final answer
x = 76,167,399.79
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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.