Finding the Fourth Proportional to 76,142,985.68, 105,066,233.16 and 43,541,639.12
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Solution
The fourth proportional to 76,142,985.68, 105,066,233.16 and 43,541,639.12 is: 60,081,121.95
Step by Step Solution
- Step 1: Write the proportion equation
76,142,985.68 : 105,066,233.16 = 43,541,639.12 : x - Step 2: Convert to fraction form
76,142,985.68/105,066,233.16 = 43,541,639.12/x - Step 3: Cross multiply
76,142,985.68x = 105,066,233.16 × 43,541,639.12 - Step 4: Simplify right side
76,142,985.68x = 4,574,756,007,950,497 - Step 5: Solve for x
x = 4,574,756,007,950,497/76,142,985.68 - Step 6: Final answer
x = 60,081,121.95
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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.