Finding the Fourth Proportional to 38,647,248.50, 53,332,888.56 and 21,243,408.68
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Solution
The fourth proportional to 38,647,248.50, 53,332,888.56 and 21,243,408.68 is: 29,315,731.18
Step by Step Solution
- Step 1: Write the proportion equation
38,647,248.50 : 53,332,888.56 = 21,243,408.68 : x - Step 2: Convert to fraction form
38,647,248.50/53,332,888.56 = 21,243,408.68/x - Step 3: Cross multiply
38,647,248.50x = 53,332,888.56 × 21,243,408.68 - Step 4: Simplify right side
38,647,248.50x = 1,132,972,347,818,646.25 - Step 5: Solve for x
x = 1,132,972,347,818,646.25/38,647,248.50 - Step 6: Final answer
x = 29,315,731.18
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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.