Finding the Fourth Proportional to 38,689,149.78, 53,391,024.45 and 21,285,121.23
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Solution
The fourth proportional to 38,689,149.78, 53,391,024.45 and 21,285,121.23 is: 29,373,466.06
Step by Step Solution
- Step 1: Write the proportion equation
38,689,149.78 : 53,391,024.45 = 21,285,121.23 : x - Step 2: Convert to fraction form
38,689,149.78/53,391,024.45 = 21,285,121.23/x - Step 3: Cross multiply
38,689,149.78x = 53,391,024.45 × 21,285,121.23 - Step 4: Simplify right side
38,689,149.78x = 1,136,434,428,012,144.25 - Step 5: Solve for x
x = 1,136,434,428,012,144.25/38,689,149.78 - Step 6: Final answer
x = 29,373,466.06
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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.