Finding the Fourth Proportional to 72,489,968.90, 108,734,953.35 and 40,241,341.70
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Solution
The fourth proportional to 72,489,968.90, 108,734,953.35 and 40,241,341.70 is: 60,362,012.55
Step by Step Solution
- Step 1: Write the proportion equation
72,489,968.90 : 108,734,953.35 = 40,241,341.70 : x - Step 2: Convert to fraction form
72,489,968.90/108,734,953.35 = 40,241,341.70/x - Step 3: Cross multiply
72,489,968.90x = 108,734,953.35 × 40,241,341.70 - Step 4: Simplify right side
72,489,968.90x = 4,375,640,412,490,910 - Step 5: Solve for x
x = 4,375,640,412,490,910/72,489,968.90 - Step 6: Final answer
x = 60,362,012.55
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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.