Finding the Fourth Proportional to 66,431,130.30, 99,646,695.45 and 18,562,074.30
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Solution
The fourth proportional to 66,431,130.30, 99,646,695.45 and 18,562,074.30 is: 27,843,111.45
Step by Step Solution
- Step 1: Write the proportion equation
66,431,130.30 : 99,646,695.45 = 18,562,074.30 : x - Step 2: Convert to fraction form
66,431,130.30/99,646,695.45 = 18,562,074.30/x - Step 3: Cross multiply
66,431,130.30x = 99,646,695.45 × 18,562,074.30 - Step 4: Simplify right side
66,431,130.30x = 1,849,649,364,692,372 - Step 5: Solve for x
x = 1,849,649,364,692,372/66,431,130.30 - Step 6: Final answer
x = 27,843,111.45
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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.