Finding the Fourth Proportional to 66,128,560.80, 99,193,158.18 and 20,070,830.04
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Solution
The fourth proportional to 66,128,560.80, 99,193,158.18 and 20,070,830.04 is: 30,106,341.27
Step by Step Solution
- Step 1: Write the proportion equation
66,128,560.80 : 99,193,158.18 = 20,070,830.04 : x - Step 2: Convert to fraction form
66,128,560.80/99,193,158.18 = 20,070,830.04/x - Step 3: Cross multiply
66,128,560.80x = 99,193,158.18 × 20,070,830.04 - Step 4: Simplify right side
66,128,560.80x = 1,990,889,018,961,615.75 - Step 5: Solve for x
x = 1,990,889,018,961,615.75/66,128,560.80 - Step 6: Final answer
x = 30,106,341.27
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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.