Finding the Fourth Proportional to 71,830,406.67, 99,125,960.19 and 38,790,654.82
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Solution
The fourth proportional to 71,830,406.67, 99,125,960.19 and 38,790,654.82 is: 53,531,103.11
Step by Step Solution
- Step 1: Write the proportion equation
71,830,406.67 : 99,125,960.19 = 38,790,654.82 : x - Step 2: Convert to fraction form
71,830,406.67/99,125,960.19 = 38,790,654.82/x - Step 3: Cross multiply
71,830,406.67x = 99,125,960.19 × 38,790,654.82 - Step 4: Simplify right side
71,830,406.67x = 3,845,160,905,595,655 - Step 5: Solve for x
x = 3,845,160,905,595,655/71,830,406.67 - Step 6: Final answer
x = 53,531,103.11
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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.