Finding the Fourth Proportional to 79,869,418.29, 109,420,579.87 and 76,882,769.19
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Solution
The fourth proportional to 79,869,418.29, 109,420,579.87 and 76,882,769.19 is: 105,328,890.16
Step by Step Solution
- Step 1: Write the proportion equation
79,869,418.29 : 109,420,579.87 = 76,882,769.19 : x - Step 2: Convert to fraction form
79,869,418.29/109,420,579.87 = 76,882,769.19/x - Step 3: Cross multiply
79,869,418.29x = 109,420,579.87 × 76,882,769.19 - Step 4: Simplify right side
79,869,418.29x = 8,412,557,186,588,964 - Step 5: Solve for x
x = 8,412,557,186,588,964/79,869,418.29 - Step 6: Final answer
x = 105,328,890.16
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.