Finding the Fourth Proportional to 86,016,083.40, 129,024,125.10 and 69,891,769.80
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Solution
The fourth proportional to 86,016,083.40, 129,024,125.10 and 69,891,769.80 is: 104,837,654.70
Step by Step Solution
- Step 1: Write the proportion equation
86,016,083.40 : 129,024,125.10 = 69,891,769.80 : x - Step 2: Convert to fraction form
86,016,083.40/129,024,125.10 = 69,891,769.80/x - Step 3: Cross multiply
86,016,083.40x = 129,024,125.10 × 69,891,769.80 - Step 4: Simplify right side
86,016,083.40x = 9,017,724,450,135,602 - Step 5: Solve for x
x = 9,017,724,450,135,602/86,016,083.40 - Step 6: Final answer
x = 104,837,654.70
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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.