Finding the Fourth Proportional to 66,291,338.04, 91,486,644.30 and 40,186,956.12
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Solution
The fourth proportional to 66,291,338.04, 91,486,644.30 and 40,186,956.12 is: 55,460,786.71
Step by Step Solution
- Step 1: Write the proportion equation
66,291,338.04 : 91,486,644.30 = 40,186,956.12 : x - Step 2: Convert to fraction form
66,291,338.04/91,486,644.30 = 40,186,956.12/x - Step 3: Cross multiply
66,291,338.04x = 91,486,644.30 × 40,186,956.12 - Step 4: Simplify right side
66,291,338.04x = 3,676,569,760,050,148 - Step 5: Solve for x
x = 3,676,569,760,050,148/66,291,338.04 - Step 6: Final answer
x = 55,460,786.71
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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.