Finding the Fourth Proportional to 90,488,611.08, 135,561,657.51 and 53,489,732.40
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Solution
The fourth proportional to 90,488,611.08, 135,561,657.51 and 53,489,732.40 is: 80,133,363.72
Step by Step Solution
- Step 1: Write the proportion equation
90,488,611.08 : 135,561,657.51 = 53,489,732.40 : x - Step 2: Convert to fraction form
90,488,611.08/135,561,657.51 = 53,489,732.40/x - Step 3: Cross multiply
90,488,611.08x = 135,561,657.51 × 53,489,732.40 - Step 4: Simplify right side
90,488,611.08x = 7,251,156,783,910,350 - Step 5: Solve for x
x = 7,251,156,783,910,350/90,488,611.08 - Step 6: Final answer
x = 80,133,363.72
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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.