Finding the Fourth Proportional to 80,930,006.70, 121,395,010.05 and 56,271,144.30
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Solution
The fourth proportional to 80,930,006.70, 121,395,010.05 and 56,271,144.30 is: 84,406,716.45
Step by Step Solution
- Step 1: Write the proportion equation
80,930,006.70 : 121,395,010.05 = 56,271,144.30 : x - Step 2: Convert to fraction form
80,930,006.70/121,395,010.05 = 56,271,144.30/x - Step 3: Cross multiply
80,930,006.70x = 121,395,010.05 × 56,271,144.30 - Step 4: Simplify right side
80,930,006.70x = 6,831,036,127,823,500 - Step 5: Solve for x
x = 6,831,036,127,823,500/80,930,006.70 - Step 6: Final answer
x = 84,406,716.45
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1.5x scale
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.