Finding the Fourth Proportional to 38,961,880.51, 53,767,458.09 and 21,558,959.23
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Solution
The fourth proportional to 38,961,880.51, 53,767,458.09 and 21,558,959.23 is: 29,751,398.59
Step by Step Solution
- Step 1: Write the proportion equation
38,961,880.51 : 53,767,458.09 = 21,558,959.23 : x - Step 2: Convert to fraction form
38,961,880.51/53,767,458.09 = 21,558,959.23/x - Step 3: Cross multiply
38,961,880.51x = 53,767,458.09 × 21,558,959.23 - Step 4: Simplify right side
38,961,880.51x = 1,159,170,436,863,043.75 - Step 5: Solve for x
x = 1,159,170,436,863,043.75/38,961,880.51 - Step 6: Final answer
x = 29,751,398.59
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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.