Finding the Fourth Proportional to 39,905,115.24, 55,069,034.70 and 21,570,400.74
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Solution
The fourth proportional to 39,905,115.24, 55,069,034.70 and 21,570,400.74 is: 29,767,139.87
Step by Step Solution
- Step 1: Write the proportion equation
39,905,115.24 : 55,069,034.70 = 21,570,400.74 : x - Step 2: Convert to fraction form
39,905,115.24/55,069,034.70 = 21,570,400.74/x - Step 3: Cross multiply
39,905,115.24x = 55,069,034.70 × 21,570,400.74 - Step 4: Simplify right side
39,905,115.24x = 1,187,861,146,843,965.75 - Step 5: Solve for x
x = 1,187,861,146,843,965.75/39,905,115.24 - Step 6: Final answer
x = 29,767,139.87
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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.