Finding the Fourth Proportional to 40,128,131.40, 60,192,197.10 and 13,202,665.80
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Solution
The fourth proportional to 40,128,131.40, 60,192,197.10 and 13,202,665.80 is: 19,803,998.70
Step by Step Solution
- Step 1: Write the proportion equation
40,128,131.40 : 60,192,197.10 = 13,202,665.80 : x - Step 2: Convert to fraction form
40,128,131.40/60,192,197.10 = 13,202,665.80/x - Step 3: Cross multiply
40,128,131.40x = 60,192,197.10 × 13,202,665.80 - Step 4: Simplify right side
40,128,131.40x = 794,697,462,079,029.25 - Step 5: Solve for x
x = 794,697,462,079,029.25/40,128,131.40 - Step 6: Final answer
x = 19,803,998.70
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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.