Finding the Fourth Proportional to 38,415,622.40, 53,018,133.12 and 22,121,273.60
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Solution
The fourth proportional to 38,415,622.40, 53,018,133.12 and 22,121,273.60 is: 30,529,991.58
Step by Step Solution
- Step 1: Write the proportion equation
38,415,622.40 : 53,018,133.12 = 22,121,273.60 : x - Step 2: Convert to fraction form
38,415,622.40/53,018,133.12 = 22,121,273.60/x - Step 3: Cross multiply
38,415,622.40x = 53,018,133.12 × 22,121,273.60 - Step 4: Simplify right side
38,415,622.40x = 1,172,828,628,508,741.75 - Step 5: Solve for x
x = 1,172,828,628,508,741.75/38,415,622.40 - Step 6: Final answer
x = 30,529,991.58
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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.