Finding the Fourth Proportional to 38,988,966.96, 53,804,787.42 and 21,348,985.19
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Solution
The fourth proportional to 38,988,966.96, 53,804,787.42 and 21,348,985.19 is: 29,461,606.68
Step by Step Solution
- Step 1: Write the proportion equation
38,988,966.96 : 53,804,787.42 = 21,348,985.19 : x - Step 2: Convert to fraction form
38,988,966.96/53,804,787.42 = 21,348,985.19/x - Step 3: Cross multiply
38,988,966.96x = 53,804,787.42 × 21,348,985.19 - Step 4: Simplify right side
38,988,966.96x = 1,148,677,609,511,654.25 - Step 5: Solve for x
x = 1,148,677,609,511,654.25/38,988,966.96 - Step 6: Final answer
x = 29,461,606.68
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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.