Finding the Fourth Proportional to 31,718,430.54, 43,770,583.80 and 18,666,458.28
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Solution
The fourth proportional to 31,718,430.54, 43,770,583.80 and 18,666,458.28 is: 25,759,211.99
Step by Step Solution
- Step 1: Write the proportion equation
31,718,430.54 : 43,770,583.80 = 18,666,458.28 : x - Step 2: Convert to fraction form
31,718,430.54/43,770,583.80 = 18,666,458.28/x - Step 3: Cross multiply
31,718,430.54x = 43,770,583.80 × 18,666,458.28 - Step 4: Simplify right side
31,718,430.54x = 817,041,776,393,943.88 - Step 5: Solve for x
x = 817,041,776,393,943.88/31,718,430.54 - Step 6: Final answer
x = 25,759,211.99
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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.