Finding the Fourth Proportional to 72,661,455.41, 100,272,076.47 and 39,621,621.02
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Solution
The fourth proportional to 72,661,455.41, 100,272,076.47 and 39,621,621.02 is: 54,677,437.85
Step by Step Solution
- Step 1: Write the proportion equation
72,661,455.41 : 100,272,076.47 = 39,621,621.02 : x - Step 2: Convert to fraction form
72,661,455.41/100,272,076.47 = 39,621,621.02/x - Step 3: Cross multiply
72,661,455.41x = 100,272,076.47 × 39,621,621.02 - Step 4: Simplify right side
72,661,455.41x = 3,972,942,212,281,439 - Step 5: Solve for x
x = 3,972,942,212,281,439/72,661,455.41 - Step 6: Final answer
x = 54,677,437.85
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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.