Finding the Fourth Proportional to 81,873,898.20, 122,474,924.10 and 73,811,741.40
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Solution
The fourth proportional to 81,873,898.20, 122,474,924.10 and 73,811,741.40 is: 110,414,767.40
Step by Step Solution
- Step 1: Write the proportion equation
81,873,898.20 : 122,474,924.10 = 73,811,741.40 : x - Step 2: Convert to fraction form
81,873,898.20/122,474,924.10 = 73,811,741.40/x - Step 3: Cross multiply
81,873,898.20x = 122,474,924.10 × 73,811,741.40 - Step 4: Simplify right side
81,873,898.20x = 9,040,087,425,653,828 - Step 5: Solve for x
x = 9,040,087,425,653,828/81,873,898.20 - Step 6: Final answer
x = 110,414,767.40
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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.