Finding the Fourth Proportional to 84,185,606.74, 115,332,351.32 and 81,038,136.18
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Solution
The fourth proportional to 84,185,606.74, 115,332,351.32 and 81,038,136.18 is: 111,020,388.81
Step by Step Solution
- Step 1: Write the proportion equation
84,185,606.74 : 115,332,351.32 = 81,038,136.18 : x - Step 2: Convert to fraction form
84,185,606.74/115,332,351.32 = 81,038,136.18/x - Step 3: Cross multiply
84,185,606.74x = 115,332,351.32 × 81,038,136.18 - Step 4: Simplify right side
84,185,606.74x = 9,346,318,792,229,764 - Step 5: Solve for x
x = 9,346,318,792,229,764/84,185,606.74 - Step 6: Final answer
x = 111,020,388.81
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.