Finding the Fourth Proportional to 80,762,480.80, 121,143,721.20 and 48,513,853.60
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Solution
The fourth proportional to 80,762,480.80, 121,143,721.20 and 48,513,853.60 is: 72,770,780.40
Step by Step Solution
- Step 1: Write the proportion equation
80,762,480.80 : 121,143,721.20 = 48,513,853.60 : x - Step 2: Convert to fraction form
80,762,480.80/121,143,721.20 = 48,513,853.60/x - Step 3: Cross multiply
80,762,480.80x = 121,143,721.20 × 48,513,853.60 - Step 4: Simplify right side
80,762,480.80x = 5,877,148,754,856,017 - Step 5: Solve for x
x = 5,877,148,754,856,017/80,762,480.80 - Step 6: Final answer
x = 72,770,780.40
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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.