Finding the Fourth Proportional to 99,691,839,579.70, 149,537,759,369.55 and 28,946,413,659.70
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Solution
The fourth proportional to 99,691,839,579.70, 149,537,759,369.55 and 28,946,413,659.70 is: 43,419,620,489.55
Step by Step Solution
- Step 1: Write the proportion equation
99,691,839,579.70 : 149,537,759,369.55 = 28,946,413,659.70 : x - Step 2: Convert to fraction form
99,691,839,579.70/149,537,759,369.55 = 28,946,413,659.70/x - Step 3: Cross multiply
99,691,839,579.70x = 149,537,759,369.55 × 28,946,413,659.70 - Step 4: Simplify right side
99,691,839,579.70x = 4,328,581,840,455,673,577,472 - Step 5: Solve for x
x = 4,328,581,840,455,673,577,472/99,691,839,579.70 - Step 6: Final answer
x = 43,419,620,489.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.