Finding the Fourth Proportional to 66,308,682.94, 91,512,171.68 and 38,806,633.06
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Solution
The fourth proportional to 66,308,682.94, 91,512,171.68 and 38,806,633.06 is: 53,556,775.81
Step by Step Solution
- Step 1: Write the proportion equation
66,308,682.94 : 91,512,171.68 = 38,806,633.06 : x - Step 2: Convert to fraction form
66,308,682.94/91,512,171.68 = 38,806,633.06/x - Step 3: Cross multiply
66,308,682.94x = 91,512,171.68 × 38,806,633.06 - Step 4: Simplify right side
66,308,682.94x = 3,551,279,266,486,670 - Step 5: Solve for x
x = 3,551,279,266,486,670/66,308,682.94 - Step 6: Final answer
x = 53,556,775.81
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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.