Finding the Fourth Proportional to 71,990,437.94, 99,349,623.64 and 40,629,582.40
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Solution
The fourth proportional to 71,990,437.94, 99,349,623.64 and 40,629,582.40 is: 56,070,414.84
Step by Step Solution
- Step 1: Write the proportion equation
71,990,437.94 : 99,349,623.64 = 40,629,582.40 : x - Step 2: Convert to fraction form
71,990,437.94/99,349,623.64 = 40,629,582.40/x - Step 3: Cross multiply
71,990,437.94x = 99,349,623.64 × 40,629,582.40 - Step 4: Simplify right side
71,990,437.94x = 4,036,533,720,090,368 - Step 5: Solve for x
x = 4,036,533,720,090,368/71,990,437.94 - Step 6: Final answer
x = 56,070,414.84
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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.