Finding the Fourth Proportional to 38,877,960.88, 53,651,768.88 and 21,237,108.17
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Solution
The fourth proportional to 38,877,960.88, 53,651,768.88 and 21,237,108.17 is: 29,307,309.17
Step by Step Solution
- Step 1: Write the proportion equation
38,877,960.88 : 53,651,768.88 = 21,237,108.17 : x - Step 2: Convert to fraction form
38,877,960.88/53,651,768.88 = 21,237,108.17/x - Step 3: Cross multiply
38,877,960.88x = 53,651,768.88 × 21,237,108.17 - Step 4: Simplify right side
38,877,960.88x = 1,139,408,419,337,256 - Step 5: Solve for x
x = 1,139,408,419,337,256/38,877,960.88 - Step 6: Final answer
x = 29,307,309.17
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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.