Finding the Fourth Proportional to 38,612,948.80, 57,918,537.60 and 19,438,556.80
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Solution
The fourth proportional to 38,612,948.80, 57,918,537.60 and 19,438,556.80 is: 29,157,389.37
Step by Step Solution
- Step 1: Write the proportion equation
38,612,948.80 : 57,918,537.60 = 19,438,556.80 : x - Step 2: Convert to fraction form
38,612,948.80/57,918,537.60 = 19,438,556.80/x - Step 3: Cross multiply
38,612,948.80x = 57,918,537.60 × 19,438,556.80 - Step 4: Simplify right side
38,612,948.80x = 1,125,852,782,910,535.75 - Step 5: Solve for x
x = 1,125,852,782,910,535.75/38,612,948.80 - Step 6: Final answer
x = 29,157,389.37
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.