Finding the Fourth Proportional to 81,531,964.14, 122,260,154.85 and 30,400,254.06
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Solution
The fourth proportional to 81,531,964.14, 122,260,154.85 and 30,400,254.06 is: 45,586,290.09
Step by Step Solution
- Step 1: Write the proportion equation
81,531,964.14 : 122,260,154.85 = 30,400,254.06 : x - Step 2: Convert to fraction form
81,531,964.14/122,260,154.85 = 30,400,254.06/x - Step 3: Cross multiply
81,531,964.14x = 122,260,154.85 × 30,400,254.06 - Step 4: Simplify right side
81,531,964.14x = 3,716,739,768,854,941 - Step 5: Solve for x
x = 3,716,739,768,854,941/81,531,964.14 - Step 6: Final answer
x = 45,586,290.09
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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.